{"id":5829,"date":"2023-09-12T19:33:23","date_gmt":"2023-09-12T17:33:23","guid":{"rendered":"https:\/\/softinery.com\/pl\/?page_id=5829"},"modified":"2024-07-24T09:00:06","modified_gmt":"2024-07-24T07:00:06","slug":"python-petla-for","status":"publish","type":"page","link":"https:\/\/softinery.com\/pl\/blog\/python-petla-for\/","title":{"rendered":"Python: P\u0119tla for"},"content":{"rendered":"<style>.wp-block-kadence-advancedheading.kt-adv-heading5829_6ff3a2-79, .wp-block-kadence-advancedheading.kt-adv-heading5829_6ff3a2-79[data-kb-block=\"kb-adv-heading5829_6ff3a2-79\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading5829_6ff3a2-79 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading5829_6ff3a2-79[data-kb-block=\"kb-adv-heading5829_6ff3a2-79\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading5829_6ff3a2-79 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading5829_6ff3a2-79[data-kb-block=\"kb-adv-heading5829_6ff3a2-79\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2 class=\"kt-adv-heading5829_6ff3a2-79 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading5829_6ff3a2-79\">Do czego s\u0142u\u017cy p\u0119tla for?<\/h2>\n\n\n\n<p>W programowaniu p\u0119tle s\u0142u\u017c\u0105 do wielokrotnego powtarzania bloku instrukcji. W j\u0119zyku Python p\u0119tla for s\u0142u\u017cy do iteracji po sekwencjach, takich jak listy, krotki, ci\u0105gi znak\u00f3w itp. Sk\u0142adnia wygl\u0105da nast\u0119puj\u0105co:<\/p>\n\n\n\n<pre class=\"wp-block-code python\"><code>for iterator_var in sequence:\n    wyra\u017cenia<\/code><\/pre>\n\n\n\n<p>Sk\u0142adni\u0119 p\u0119tl for zilustrowano na rysunku poni\u017cej. <\/p>\n\n\n<style>.kb-image5829_4db17b-20.kb-image-is-ratio-size, .kb-image5829_4db17b-20 .kb-image-is-ratio-size{max-width:550px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image5829_4db17b-20.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image5829_4db17b-20 .kb-image-is-ratio-size{align-self:unset;}.kb-image5829_4db17b-20 figure{max-width:550px;}.kb-image5829_4db17b-20 .image-is-svg, .kb-image5829_4db17b-20 .image-is-svg img{width:100%;}.kb-image5829_4db17b-20 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image5829_4db17b-20\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"634\" src=\"https:\/\/softinery.com\/wp-content\/uploads\/sites\/5\/2023\/09\/Petla-for-ilustracja-3-1024x634.webp\" alt=\"Python: p\u0119tla for - ilustracja\" class=\"kb-img wp-image-5875\" srcset=\"https:\/\/softinery.com\/pl\/wp-content\/uploads\/sites\/5\/2023\/09\/Petla-for-ilustracja-3-1024x634.webp 1024w, https:\/\/softinery.com\/pl\/wp-content\/uploads\/sites\/5\/2023\/09\/Petla-for-ilustracja-3-300x186.webp 300w, https:\/\/softinery.com\/pl\/wp-content\/uploads\/sites\/5\/2023\/09\/Petla-for-ilustracja-3-768x475.webp 768w, https:\/\/softinery.com\/pl\/wp-content\/uploads\/sites\/5\/2023\/09\/Petla-for-ilustracja-3-1536x950.webp 1536w, https:\/\/softinery.com\/pl\/wp-content\/uploads\/sites\/5\/2023\/09\/Petla-for-ilustracja-3.webp 2020w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Python: Ilustracja sk\u0142adni p\u0119tli for<\/figcaption><\/figure><\/div>\n\n\n<style>.kadence-column5829_116db9-4e > .kt-inside-inner-col{padding-top:var(--global-kb-spacing-md, 2rem);padding-bottom:var(--global-kb-spacing-xs, 1rem);}.kadence-column5829_116db9-4e > .kt-inside-inner-col,.kadence-column5829_116db9-4e > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column5829_116db9-4e > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column5829_116db9-4e > .kt-inside-inner-col{flex-direction:column;}.kadence-column5829_116db9-4e > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column5829_116db9-4e > .kt-inside-inner-col{background-color:#d88b49;background-image:url('https:\/\/softinery.com\/wp-content\/uploads\/sites\/5\/2023\/08\/spreadsheet-2.webp');background-size:cover;background-position:center center;background-attachment:scroll;background-repeat:no-repeat;}.kadence-column5829_116db9-4e > .kt-inside-inner-col:before{opacity:0.49;background-color:#d88b49;}.kadence-column5829_116db9-4e:hover > .kt-inside-inner-col:before{opacity:0.71;}.kadence-column5829_116db9-4e{position:relative;}.kadence-column5829_116db9-4e, .kt-inside-inner-col > .kadence-column5829_116db9-4e:not(.specificity){margin-top:var(--global-kb-spacing-sm, 1.5rem);margin-bottom:var(--global-kb-spacing-sm, 1.5rem);}@media all and (max-width: 1024px){.kadence-column5829_116db9-4e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column5829_116db9-4e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column5829_116db9-4e kb-section-has-link kb-section-has-overlay box-shadow\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-advancedheading.kt-adv-heading5829_e15321-56, .wp-block-kadence-advancedheading.kt-adv-heading5829_e15321-56[data-kb-block=\"kb-adv-heading5829_e15321-56\"]{text-align:center;font-size:var(--global-kb-font-size-lg, 2rem);font-style:normal;text-shadow:4px 4px 3px rgba(0, 0, 0, 0.2);}.wp-block-kadence-advancedheading.kt-adv-heading5829_e15321-56 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading5829_e15321-56[data-kb-block=\"kb-adv-heading5829_e15321-56\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading5829_e15321-56 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading5829_e15321-56[data-kb-block=\"kb-adv-heading5829_e15321-56\"] img.kb-inline-image{width:150px;vertical-align:baseline;}@media all and (max-width: 1024px){.wp-block-kadence-advancedheading.kt-adv-heading5829_e15321-56, .wp-block-kadence-advancedheading.kt-adv-heading5829_e15321-56[data-kb-block=\"kb-adv-heading5829_e15321-56\"]{text-shadow:4px 4px 3px rgba(0, 0, 0, 0.2);}}@media all and (max-width: 767px){.wp-block-kadence-advancedheading.kt-adv-heading5829_e15321-56, .wp-block-kadence-advancedheading.kt-adv-heading5829_e15321-56[data-kb-block=\"kb-adv-heading5829_e15321-56\"]{text-shadow:4px 4px 3px rgba(0, 0, 0, 0.2);}}<\/style>\n<a href=\"https:\/\/softinery.com\/pl\/katalog-szkolen\/\" class=\"kb-advanced-heading-link kt-adv-heading-link5829_e15321-56\"><h2 class=\"kt-adv-heading5829_e15321-56 wp-block-kadence-advancedheading has-nv-site-bg-color has-text-color\" data-kb-block=\"kb-adv-heading5829_e15321-56\"><strong>Szkolenia IT<\/strong><\/h2><\/a>\n<\/div><a href=\"https:\/\/softinery.com\/pl\/katalog-szkolen\/\" class=\"kb-section-link-overlay\"><\/a><\/div>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading5829_9c8a34-c9, .wp-block-kadence-advancedheading.kt-adv-heading5829_9c8a34-c9[data-kb-block=\"kb-adv-heading5829_9c8a34-c9\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading5829_9c8a34-c9 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading5829_9c8a34-c9[data-kb-block=\"kb-adv-heading5829_9c8a34-c9\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading5829_9c8a34-c9 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading5829_9c8a34-c9[data-kb-block=\"kb-adv-heading5829_9c8a34-c9\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h3 class=\"kt-adv-heading5829_9c8a34-c9 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading5829_9c8a34-c9\"><strong>Przyk\u0142ad 1. Zastosowanie p\u0119tli for do iterowania po li\u015bcie<\/strong><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers cbp-highlight-hover\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#24292e;--cbp-line-number-width:calc(1 * 0.6 * .875rem);--cbp-line-highlight-color:rgba(16, 41, 67, 0.2);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#ffffff\"><span style=\"background:#2f363c;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#ffffff\">Python<\/span><\/span><span role=\"button\" tabindex=\"0\" data-code=\"owoce = ['banan', 'gruszka', 'ananas', 'brzoskwinia']\n\nfor owoc in owoce:\n    print(owoc)\" style=\"color:#24292e;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-light\" style=\"background-color: #fff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #24292E\">owoce <\/span><span style=\"color: #D73A49\">=<\/span><span style=\"color: #24292E\"> [<\/span><span style=\"color: #032F62\">&#39;banan&#39;<\/span><span style=\"color: #24292E\">, <\/span><span style=\"color: #032F62\">&#39;gruszka&#39;<\/span><span style=\"color: #24292E\">, <\/span><span style=\"color: #032F62\">&#39;ananas&#39;<\/span><span style=\"color: #24292E\">, <\/span><span style=\"color: #032F62\">&#39;brzoskwinia&#39;<\/span><span style=\"color: #24292E\">]<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D73A49\">for<\/span><span style=\"color: #24292E\"> owoc <\/span><span style=\"color: #D73A49\">in<\/span><span style=\"color: #24292E\"> owoce:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #24292E\">    <\/span><span style=\"color: #005CC5\">print<\/span><span style=\"color: #24292E\">(owoc)<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p><strong>Wynik<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>banan\ngruszka\nananas\nbrzoskwinia<\/code><\/pre>\n\n\n\n<p>W powy\u017cszym przyk\u0142adzie stworzyli\u015bmy list\u0119 <em>owoce<\/em>. Nast\u0119pnie w p\u0119tli for, wykorzystujemy zmienn\u0105 <em>owoc<\/em>, kt\u00f3ra w pierwszej iteracji przyjmuje warto\u015b\u0107 pierwszego elementu listy, czyli <em>banan<\/em>. W ka\u017cdej nast\u0119pnej iteracji przypisywana jest jej kolejne element z listy <em>owoce<\/em>, a\u017c do ostatniego elementu.<\/p>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading5829_33659d-97, .wp-block-kadence-advancedheading.kt-adv-heading5829_33659d-97[data-kb-block=\"kb-adv-heading5829_33659d-97\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading5829_33659d-97 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading5829_33659d-97[data-kb-block=\"kb-adv-heading5829_33659d-97\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading5829_33659d-97 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading5829_33659d-97[data-kb-block=\"kb-adv-heading5829_33659d-97\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2 class=\"kt-adv-heading5829_33659d-97 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading5829_33659d-97\">P\u0119tla for z funkcj\u0105 range()<\/h2>\n\n\n\n<p>Funkcja <em>range<\/em>() tworzy sekwencj\u0119 warto\u015bci pomi\u0119dzy dwiema liczbami. Jest ona cz\u0119sto stosowana wraz z p\u0119tl\u0105 for, gdy chcemy wykona\u0107 okre\u015blon\u0105 liczb\u0119 iteracji.<\/p>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading5829_f37287-7f, .wp-block-kadence-advancedheading.kt-adv-heading5829_f37287-7f[data-kb-block=\"kb-adv-heading5829_f37287-7f\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading5829_f37287-7f mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading5829_f37287-7f[data-kb-block=\"kb-adv-heading5829_f37287-7f\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading5829_f37287-7f img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading5829_f37287-7f[data-kb-block=\"kb-adv-heading5829_f37287-7f\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h3 class=\"kt-adv-heading5829_f37287-7f wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading5829_f37287-7f\"><strong>Przyk\u0142ad 2. U\u017cycie p\u0119tli for wraz z funkcj\u0105 range(n)<\/strong><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers cbp-highlight-hover\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#24292e;--cbp-line-number-width:calc(1 * 0.6 * .875rem);--cbp-line-highlight-color:rgba(16, 41, 67, 0.2);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#ffffff\"><span style=\"background:#2f363c;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#ffffff\">Python<\/span><\/span><span role=\"button\" tabindex=\"0\" data-code=\"liczby = range(5)\n\nfor i in liczby:\n    print(i)\" style=\"color:#24292e;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-light\" style=\"background-color: #fff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #24292E\">liczby <\/span><span style=\"color: #D73A49\">=<\/span><span style=\"color: #24292E\"> <\/span><span style=\"color: #005CC5\">range<\/span><span style=\"color: #24292E\">(<\/span><span style=\"color: #005CC5\">5<\/span><span style=\"color: #24292E\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D73A49\">for<\/span><span style=\"color: #24292E\"> i <\/span><span style=\"color: #D73A49\">in<\/span><span style=\"color: #24292E\"> liczby:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #24292E\">    <\/span><span style=\"color: #005CC5\">print<\/span><span style=\"color: #24292E\">(i)<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p>W przyk\u0142adzie powy\u017cej tworzymy sekwencj\u0119 liczb od 0 do 4 (funkcja range uwzgl\u0119nia warto\u015b\u0107 o jeden mniejsz\u0105 od tej w nawiasie). Nast\u0119pnie program itereuje po elementach sekwencji przy u\u017cyciu p\u0119tli for i wy\u015bwietla na ekranie kolejne warto\u015bci.<\/p>\n\n\n\n<p><strong>Wynik<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code python\"><code>0\n1\n2\n3\n4<\/code><\/pre>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading5829_1cc685-83, .wp-block-kadence-advancedheading.kt-adv-heading5829_1cc685-83[data-kb-block=\"kb-adv-heading5829_1cc685-83\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading5829_1cc685-83 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading5829_1cc685-83[data-kb-block=\"kb-adv-heading5829_1cc685-83\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading5829_1cc685-83 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading5829_1cc685-83[data-kb-block=\"kb-adv-heading5829_1cc685-83\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h3 class=\"kt-adv-heading5829_1cc685-83 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading5829_1cc685-83\"><strong>Przyk\u0142ad 3. U\u017cycie p\u0119tli for wraz z funkcj\u0105 range(a, b, krok)<\/strong><\/h3>\n\n\n\n<p>Funkcja <em>range<\/em>() domy\u015blnie przyjmuje warto\u015b\u0107 minimaln\u0105 r\u00f3wn\u0105 0 oraz krok r\u00f3wny 1. Mo\u017cemy jednak zmieni\u0107 te domy\u015blne warto\u015bci, tak jak to przedstawi\u0142em poni\u017cej.<\/p>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers cbp-highlight-hover\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#24292e;--cbp-line-number-width:calc(1 * 0.6 * .875rem);--cbp-line-highlight-color:rgba(16, 41, 67, 0.2);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#ffffff\"><span style=\"background:#2f363c;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#ffffff\">Python<\/span><\/span><span role=\"button\" tabindex=\"0\" data-code=\"for x in range(2, 10, 2):\n  print(x)\" style=\"color:#24292e;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-light\" style=\"background-color: #fff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D73A49\">for<\/span><span style=\"color: #24292E\"> x <\/span><span style=\"color: #D73A49\">in<\/span><span style=\"color: #24292E\"> <\/span><span style=\"color: #005CC5\">range<\/span><span style=\"color: #24292E\">(<\/span><span style=\"color: #005CC5\">2<\/span><span style=\"color: #24292E\">, <\/span><span style=\"color: #005CC5\">10<\/span><span style=\"color: #24292E\">, <\/span><span style=\"color: #005CC5\">2<\/span><span style=\"color: #24292E\">):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #24292E\">  <\/span><span style=\"color: #005CC5\">print<\/span><span style=\"color: #24292E\">(x)<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p><strong>Wynik<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code python\"><code>2\n4\n6\n8<\/code><\/pre>\n\n\n\n<p>Warto zwr\u00f3ci\u0107 uwag\u0119, \u017ce podobnie jak w poprzednim przyk\u0142adzie, funkcja <em>range<\/em>() nie uwzgl\u0119dnia warto\u015bci maksymalnej u\u017cytej jako argument. Dlatego p\u0119tla for ko\u0144czy dzia\u0142anie na warto\u015bci 8, a nie 10.<\/p>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading5829_85b057-78, .wp-block-kadence-advancedheading.kt-adv-heading5829_85b057-78[data-kb-block=\"kb-adv-heading5829_85b057-78\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading5829_85b057-78 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading5829_85b057-78[data-kb-block=\"kb-adv-heading5829_85b057-78\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading5829_85b057-78 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading5829_85b057-78[data-kb-block=\"kb-adv-heading5829_85b057-78\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2 class=\"kt-adv-heading5829_85b057-78 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading5829_85b057-78\">Klauzula else i p\u0119tla for<\/h2>\n\n\n\n<p>S\u0142owo kluczowe else w p\u0119tli for okre\u015bla blok kodu, kt\u00f3ry ma zosta\u0107 wykonany po zako\u0144czeniu p\u0119tli. Istotne jest to, \u017ce instrukcje znajduj\u0105ce si\u0119 wewn\u0105trz bloku else zostan\u0105 wywo\u0142ane tylko wtedy, gdy p\u0119tla zako\u0144czy si\u0119 bez jej przerwania.<\/p>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading5829_4fb8b8-79, .wp-block-kadence-advancedheading.kt-adv-heading5829_4fb8b8-79[data-kb-block=\"kb-adv-heading5829_4fb8b8-79\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading5829_4fb8b8-79 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading5829_4fb8b8-79[data-kb-block=\"kb-adv-heading5829_4fb8b8-79\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading5829_4fb8b8-79 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading5829_4fb8b8-79[data-kb-block=\"kb-adv-heading5829_4fb8b8-79\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h3 class=\"kt-adv-heading5829_4fb8b8-79 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading5829_4fb8b8-79\"><strong>Przyk\u0142ad 4. U\u017cycie klauzuli else wraz z p\u0119tl\u0105 for<\/strong><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers cbp-highlight-hover\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#24292e;--cbp-line-number-width:calc(2 * 0.6 * .875rem);--cbp-line-highlight-color:rgba(16, 41, 67, 0.2);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:16px 0 0 16px;width:100%;text-align:left;background-color:#ffffff\"><span style=\"background:#2f363c;padding:0.3rem 0.5rem 0.2rem;border-radius:1rem;font-size:0.8em;line-height:1;height:1.25rem;text-align:center;display:inline-flex;align-items:center;justify-content:center;color:#ffffff\">Python<\/span><\/span><span role=\"button\" tabindex=\"0\" data-code=\"for x in range(5):\n  print(x)\nelse:\n  print(&quot;Koniec&quot;)\n\nfor x in range(5):\n  if x == 4: break\n  print(x)\nelse:\n  print(&quot;Koniec 2&quot;)\" style=\"color:#24292e;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2\"><\/path><\/svg><\/span><pre class=\"shiki github-light\" style=\"background-color: #fff\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D73A49\">for<\/span><span style=\"color: #24292E\"> x <\/span><span style=\"color: #D73A49\">in<\/span><span style=\"color: #24292E\"> <\/span><span style=\"color: #005CC5\">range<\/span><span style=\"color: #24292E\">(<\/span><span style=\"color: #005CC5\">5<\/span><span style=\"color: #24292E\">):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #24292E\">  <\/span><span style=\"color: #005CC5\">print<\/span><span style=\"color: #24292E\">(x)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D73A49\">else<\/span><span style=\"color: #24292E\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #24292E\">  <\/span><span style=\"color: #005CC5\">print<\/span><span style=\"color: #24292E\">(<\/span><span style=\"color: #032F62\">&quot;Koniec&quot;<\/span><span style=\"color: #24292E\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D73A49\">for<\/span><span style=\"color: #24292E\"> x <\/span><span style=\"color: #D73A49\">in<\/span><span style=\"color: #24292E\"> <\/span><span style=\"color: #005CC5\">range<\/span><span style=\"color: #24292E\">(<\/span><span style=\"color: #005CC5\">5<\/span><span style=\"color: #24292E\">):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #24292E\">  <\/span><span style=\"color: #D73A49\">if<\/span><span style=\"color: #24292E\"> x <\/span><span style=\"color: #D73A49\">==<\/span><span style=\"color: #24292E\"> <\/span><span style=\"color: #005CC5\">4<\/span><span style=\"color: #24292E\">: <\/span><span style=\"color: #D73A49\">break<\/span><\/span>\n<span class=\"line\"><span style=\"color: #24292E\">  <\/span><span style=\"color: #005CC5\">print<\/span><span style=\"color: #24292E\">(x)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D73A49\">else<\/span><span style=\"color: #24292E\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #24292E\">  <\/span><span style=\"color: #005CC5\">print<\/span><span style=\"color: #24292E\">(<\/span><span style=\"color: #032F62\">&quot;Koniec 2&quot;<\/span><span style=\"color: #24292E\">)<\/span><\/span><\/code><\/pre><\/div>\n\n\n\n<p><strong>Wynik<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code python\"><code>0\n1\n2\n3\n4\nKoniec\n0\n1\n2\n3<\/code><\/pre>\n\n\n\n<p>Widzimy, \u017ce po pierwszym wywo\u0142aniu p\u0119tli instrukcja print znajduj\u0105ca si\u0119 w bloku else zostaje wywo\u0142ana, co wynika z prawid\u0142owego zako\u0144czenia dzia\u0142ania p\u0119tli for. W drugim wywo\u0142aniu, gdy x jest r\u00f3wne 4 p\u0119tla zostaje przerwana instrukcj\u0105 break, co skutkuje pomini\u0119ciem bloku else.<\/p>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading5829_c7aef6-a4, .wp-block-kadence-advancedheading.kt-adv-heading5829_c7aef6-a4[data-kb-block=\"kb-adv-heading5829_c7aef6-a4\"]{font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading5829_c7aef6-a4 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading5829_c7aef6-a4[data-kb-block=\"kb-adv-heading5829_c7aef6-a4\"] mark.kt-highlight{font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading5829_c7aef6-a4 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading5829_c7aef6-a4[data-kb-block=\"kb-adv-heading5829_c7aef6-a4\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<h2 class=\"kt-adv-heading5829_c7aef6-a4 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading5829_c7aef6-a4\">Podsumowanie<\/h2>\n\n\n\n<p>Z artyku\u0142u dowiedzia\u0142e\u015b si\u0119 jak tworzy\u0107 i wykorzystywa\u0107 p\u0119tl\u0119 for w j\u0119zyku Python. W szczeg\u00f3lno\u015bci nauczy\u0142e\u015b si\u0119 jak:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>iterowa\u0107 po li\u015bcie i sekwencji<\/li>\n\n\n\n<li>wykorzystywa\u0107 funckj\u0119 range()<\/li>\n\n\n\n<li>dzia\u0142a klauzula else wraz z p\u0119tl\u0105 for<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-color\" style=\"color:#8a8a8a\">#python p\u0119tla for #programowanie #kurs programowania python<\/p>\n\n\n<style>.kb-row-layout-id5829_94ab20-dc > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id5829_94ab20-dc > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id5829_94ab20-dc > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id5829_94ab20-dc > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id5829_94ab20-dc > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id5829_94ab20-dc > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id5829_94ab20-dc alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column5829_46d5ba-68 > .kt-inside-inner-col,.kadence-column5829_46d5ba-68 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column5829_46d5ba-68 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column5829_46d5ba-68 > .kt-inside-inner-col{flex-direction:column;}.kadence-column5829_46d5ba-68 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column5829_46d5ba-68 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column5829_46d5ba-68{position:relative;}@media all and (max-width: 1024px){.kadence-column5829_46d5ba-68 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column5829_46d5ba-68 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column5829_46d5ba-68\"><div class=\"kt-inside-inner-col\"><style>.wp-block-kadence-spacer.kt-block-spacer-5829_4f2333-3a .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-5829_4f2333-3a .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-5829_4f2333-3a\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n\n\n\n<p class=\"has-text-align-right\" style=\"font-size:2em\"><a href=\"https:\/\/softinery.com\/pl\/darmowy-kurs-python-online\/petla-while-python\/\">Nast\u0119pny materia\u0142: P\u0119tla while<\/a><\/p>\n\n\n<style>.wp-block-kadence-spacer.kt-block-spacer-5829_1102f3-af .kt-block-spacer{height:60px;}.wp-block-kadence-spacer.kt-block-spacer-5829_1102f3-af .kt-divider{border-top-width:1px;height:1px;border-top-color:#eee;width:80%;border-top-style:solid;}<\/style>\n<div class=\"wp-block-kadence-spacer aligncenter kt-block-spacer-5829_1102f3-af\"><div class=\"kt-block-spacer kt-block-spacer-halign-center\"><hr class=\"kt-divider\"\/><\/div><\/div>\n<\/div><\/div>\n\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Do czego s\u0142u\u017cy p\u0119tla for? W programowaniu p\u0119tle s\u0142u\u017c\u0105 do wielokrotnego powtarzania bloku instrukcji. W j\u0119zyku Python p\u0119tla for s\u0142u\u017cy do iteracji po sekwencjach, takich jak listy, krotki, ci\u0105gi znak\u00f3w itp. Sk\u0142adnia wygl\u0105da nast\u0119puj\u0105co: Sk\u0142adni\u0119 p\u0119tl for zilustrowano na rysunku poni\u017cej. Szkolenia IT Przyk\u0142ad 1. Zastosowanie p\u0119tli for do iterowania po li\u015bcie Wynik W powy\u017cszym&hellip;&nbsp;<a href=\"https:\/\/softinery.com\/pl\/blog\/python-petla-for\/\" rel=\"bookmark\">Dowiedz si\u0119 wi\u0119cej &raquo;<span class=\"screen-reader-text\">Python: P\u0119tla for<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":578,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-5829","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Python: P\u0119tla for<\/title>\n<meta name=\"description\" content=\"W j\u0119zyku Python p\u0119tla for s\u0142u\u017cy do iteracji po sekwencjach, takich jak listy, krotki, ci\u0105gi znak\u00f3w. 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