{"id":214,"date":"2026-05-14T18:31:22","date_gmt":"2026-05-14T10:31:22","guid":{"rendered":"https:\/\/junai.ai\/blog\/python-first-program-2\/"},"modified":"2026-05-17T07:31:10","modified_gmt":"2026-05-16T23:31:10","slug":"python-first-program-2","status":"publish","type":"post","link":"https:\/\/junai.ai\/blog\/python-first-program-2\/","title":{"rendered":"\ud30c\uc774\uc36c \uccab \ud504\ub85c\uadf8\ub7a8 \u2014 input\u00b7print\u00b7f-string (2\ud3b8)"},"content":{"rendered":"\n<!-- WordPress REST API \ubc1c\ud589\uc6a9 HTML (\uc790\ub3d9 \uc0dd\uc131) -->\n<!-- WP-FEATURED-MEDIA-ID: 581 -->\n<div style=\"max-width:800px;margin:0 auto;\">\n<style>\n\/* js-textbook \u2014 PostgreSQL \uad50\uc7ac \ub3d9\uc77c \ud314\ub808\ud2b8 *\/\n:root {\n  --color-primary: #336791;\n  --color-accent: #60a5fa;\n  --color-bg: #fafafa;\n  --color-bg-card: #ffffff;\n  --color-text: #1e293b;\n  --color-text-muted: #64748b;\n  --hero-start: #0f172a;\n  --hero-end: #336791;\n  --font-body: -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;\n  --size-body: 17px;\n  --line-height: 1.75;\n}\n* { box-sizing: border-box; }\n.container { max-width: 760px; margin: 0 auto; padding: 0 22px 80px; }\n.hero { background: linear-gradient(135deg, var(--hero-start) 0%, var(--hero-end) 100%); color: #fff; padding: 72px 22px 56px; text-align: center; }\n.hero .badge { display: inline-block; background: rgba(96,165,250,0.18); color: var(--color-accent); padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 18px; }\n.hero h1 { margin: 0 0 18px; font-size: 36px; line-height: 1.3; letter-spacing: -0.3px; }\n.hero p.sub { margin: 0 auto; max-width: 580px; font-size: 17px; color: #bfdbfe; }\n.hero img { width: 100%; max-width: 720px; height: auto; margin: 36px auto 0; display: block; border-radius: 10px; box-shadow: 0 8px 32px rgba(0,0,0,0.3); }\n.meta { display: flex; gap: 14px; justify-content: center; margin-top: 20px; font-size: 13px; color: #93c5fd; flex-wrap: wrap; }\n.meta span::before { content: \"\u00b7\"; margin-right: 14px; color: #1e3a8a; }\n.meta span:first-child::before { content: \"\"; margin: 0; }\narticle { background: var(--color-bg-card); margin-top: -36px; padding: 44px 28px; border-radius: 14px; box-shadow: 0 2px 18px rgba(0,0,0,0.06); }\narticle p { margin: 0 0 18px; }\nh2 { font-size: 28px; line-height: 1.35; letter-spacing: -0.3px; margin: 48px 0 18px; padding-bottom: 10px; border-bottom: 2px solid var(--color-primary); }\nh2:first-of-type { margin-top: 8px; }\nh3 { font-size: 21px; line-height: 1.4; margin: 30px 0 12px; color: var(--color-primary); }\ncode { background: #f1f5f9; color: #0f172a; padding: 2px 6px; border-radius: 4px; font-family: 'SFMono-Regular', Menlo, Consolas, monospace; font-size: 0.92em; }\npre { background: #0f172a; color: #e2e8f0; padding: 18px 20px; border-radius: 10px; overflow-x: auto; font-size: 14.5px; line-height: 1.65; margin: 18px 0; }\npre code { background: transparent; color: inherit; padding: 0; }\nul, ol { margin: 0 0 18px; padding-left: 24px; }\nli { margin-bottom: 8px; }\nstrong { color: #0f172a; }\n.databox { background: #eff6ff; border-left: 4px solid var(--color-primary); padding: 18px 20px; border-radius: 6px; margin: 22px 0; }\n.databox p { margin: 0 0 8px; }\n.databox p:last-child { margin: 0; }\n.databox strong { color: var(--color-primary); }\n.warnbox { background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%); border-left: 4px solid #d97706; padding: 18px 20px; border-radius: 6px; margin: 22px 0; }\n.warnbox strong { color: #92400e; }\n.tablewrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 22px 0; }\ntable { width: 100%; border-collapse: collapse; font-size: 15px; background: var(--color-bg-card); }\nth, td { padding: 11px 12px; text-align: left; border-bottom: 1px solid #e2e8f0; vertical-align: top; }\nth { background: #f1f5f9; font-weight: 700; color: #0f172a; }\ntd:first-child, th:first-child { font-weight: 700; }\n.cta { background: linear-gradient(135deg, #336791 0%, #60a5fa 100%); color: #fff; padding: 30px 24px; border-radius: 12px; margin-top: 44px; text-align: center; }\n.cta h3 { color: #fff; margin: 0 0 10px; }\n.cta p { margin: 0; color: #dbeafe; }\n.series-nav { background: #eff6ff; padding: 18px 22px; border-radius: 10px; margin-top: 24px; font-size: 14.5px; color: var(--color-text-muted); }\n.series-nav strong { color: var(--color-primary); }\n@media (max-width: 480px) {\n  .hero { padding: 52px 18px 44px; }\n  .hero h1 { font-size: 26px; }\n  .hero p.sub { font-size: 15px; }\n  article { padding: 28px 18px; border-radius: 10px; }\n  h2 { font-size: 22px; }\n  h3 { font-size: 18px; }\npre { font-size: 13px; padding: 14px 16px; }\n}\n@media (max-width: 560px) {\n  .tablewrap table, .tablewrap thead, .tablewrap tbody, .tablewrap tr, .tablewrap th, .tablewrap td { display: block; width: auto; }\n  .tablewrap thead { display: none; }\n  .tablewrap tr { margin: 0 0 14px; border: 1px solid #e2e8f0; border-radius: 10px; overflow: hidden; }\n  .tablewrap td { border: none; border-bottom: 1px solid #f1f5f9; padding: 9px 14px; }\n  .tablewrap td:first-child { background: #eff6ff; font-weight: 800; font-size: 15.5px; }\n  .tablewrap td:last-child { border-bottom: none; }\n  .tablewrap td[data-label]::before { content: attr(data-label) \" \u2014 \"; font-weight: 700; color: var(--color-primary); }\n}\n<\/style>\n<header class=\"hero\">\n  <span class=\"badge\">\ud30c\uc774\uc36c \uad50\uc7ac \u00b7 2\ud3b8 \/ 27\ud3b8<\/span>\n  <h1>\ud30c\uc774\uc36c \uccab \ud504\ub85c\uadf8\ub7a8 \u2014 input\u00b7print\u00b7f-string<\/h1>\n  <p class=\"sub\">hello.py \uc138 \uc904 \uc548\uc5d0 \ub4e4\uc5b4\uc788\ub294 \ub2e4\uc12f \uac00\uc9c0 \uba85\ub839. \ud55c \uc904\uc529 \ud574\ubd80\ud569\ub2c8\ub2e4.<\/p>\n  <div class=\"meta\"><span>\uc785\ubb38<\/span><span>\uc77d\ub294 \uc2dc\uac04 6\ubd84<\/span><span>2026-05-13<\/span><\/div>\n  <img decoding=\"async\" src=\"https:\/\/junai.ai\/blog\/wp-content\/uploads\/2026\/05\/hero-200.jpg\" alt=\"hello.py \uc138 \uc904 \ucf54\ub4dc\uc640 \uc2e4\ud589 \uacb0\uacfc\ub97c \ubcf4\uc5ec\uc8fc\ub294 \ud130\ubbf8\ub110 \ud654\uba74\">\n<\/header>\n\n<div class=\"container\">\n<article>\n\n<p>1\ud3b8 \ub05d\uc5d0\uc11c \ub9cc\ub4e0 <code>hello.py<\/code> \uc138 \uc904. \uc9e7\uc740 \ucf54\ub4dc\uc9c0\ub9cc \uc785\ubb38\uc790\uac00 \ud3c9\uc0dd \uc4f8 \ub2e4\uc12f \uac00\uc9c0 \u2014 <strong>input\u00b7\ubcc0\uc218\u00b7print\u00b7f-string\u00b7\ub0b4\uc7a5 \ud568\uc218<\/strong> \u2014 \uac00 \uc555\ucd95\ub3fc \uc788\uc2b5\ub2c8\ub2e4. \ube44\uc720\ud558\uc790\uba74 \uc790\uc804\uac70 \ud578\ub4e4\u00b7\ud398\ub2ec\u00b7\uccb4\uc778\u00b7\ube0c\ub808\uc774\ud06c\u00b7\uc548\uc7a5\uc774 \ud55c \ubc88\uc5d0 \ub4e4\uc5b4\uc788\ub294 \uc148. \uc774 \ub2e4\uc12f \uac00\uc9c0\ub97c \ubabb \ub5bc\uba74 3\ud3b8(\uc790\ub8cc\ud615) \ubd80\ud130 \uc790\uafb8 \ub9c9\ud600\uc694.<\/p>\n\n<p>2\ud3b8\uc740 \uadf8\ub798\uc11c \ucf54\ub4dc\ub97c \ud55c \uc904\uc529 \ud574\ubd80\ud558\uace0, \ub9c8\uc9c0\ub9c9\uc5d0 \ucd08\ubcf4\uc790\uac00 \uc790\uc8fc \ube60\uc9c0\ub294 \ud568\uc815 4\uac00\uc9c0\ub97c \uc815\ub9ac\ud569\ub2c8\ub2e4. \ub2e4 \uc77d\uc73c\uba74 \ubcf8\uc778\uc774 \uc9c1\uc811 \uc785\ub825\ubc1b\uc544 \uc778\uc0ac\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\u00b7\uc774\ub984 \uae00\uc790 \uc218\uc5d0 \ub530\ub77c \ub2e4\ub978 \uba54\uc2dc\uc9c0 \ub0b4\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \ubcc0\ud615\ud574 \ub9cc\ub4e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n<pre><code># hello.py\nname = input(\"\uc774\ub984\uc744 \uc785\ub825\ud558\uc138\uc694: \")\nprint(f\"\uc548\ub155\ud558\uc138\uc694, {name}\ub2d8!\")\nprint(f\"\uc774\ub984 \uae00\uc790 \uc218: {len(name)}\")<\/code><\/pre>\n\n<h2>\uccab \uc904 \u2014 input \uc73c\ub85c \uc0ac\uc6a9\uc790\uc5d0\uac8c \ubb3b\uae30<\/h2>\n\n<p>\uccab \uc904\uc744 \uc67c\ucabd\ubd80\ud130 \uc624\ub978\ucabd\uc73c\ub85c \uc77d\uc5b4\ubd05\ub2c8\ub2e4. <code>name<\/code> \uc740 <strong>\ubcc0\uc218 \uc774\ub984<\/strong>\uc785\ub2c8\ub2e4. \ube48 \uc0c1\uc790\ub97c \ud558\ub098 \ub9cc\ub4e4\uace0 <em>&#8220;name&#8221;<\/em> \uc774\ub77c\ub294 \uc774\ub984\ud45c\ub97c \ubd99\uc778\ub2e4\uace0 \uc0dd\uac01\ud558\uc138\uc694. <code>=<\/code> \ub294 \uc218\ud559\uc758 \ub4f1\ud638\uac00 \uc544\ub2c8\ub77c <strong>&#8220;\uc624\ub978\ucabd \uacb0\uacfc\ub97c \uc67c\ucabd \uc0c1\uc790\uc5d0 \ub123\uc5b4\ub77c&#8221;<\/strong> \ub77c\ub294 \ud560\ub2f9 \uc5f0\uc0b0\uc790\uc785\ub2c8\ub2e4. <code>input(...)<\/code> \uc740 <strong>\ub0b4\uc7a5 \ud568\uc218<\/strong> \ud638\ucd9c \u2014 \uad04\ud638 \uc548 \ubb38\uc790\uc5f4\uc744 \ud654\uba74\uc5d0 \ubcf4\uc5ec\uc8fc\uace0, \uc0ac\uc6a9\uc790\uac00 Enter \ub97c \ub204\ub97c \ub54c\uae4c\uc9c0 \uae30\ub2e4\ub9b0 \ub2e4\uc74c, \uc785\ub825\ud55c \ubb38\uc790\uc5f4\uc744 \ub3cc\ub824\uc90d\ub2c8\ub2e4.<\/p>\n\n<p>\uadf8\ub798\uc11c \uccab \uc904 \uc804\uccb4\uc758 \uc758\ubbf8\ub294: <em>&#8220;\ud654\uba74\uc5d0 &#8216;\uc774\ub984\uc744 \uc785\ub825\ud558\uc138\uc694:&#8217; \ub97c \ub744\uc6b0\uace0, \uc0ac\uc6a9\uc790 \uc785\ub825\uc744 \ubc1b\uc544, \uadf8 \uac12\uc744 <code>name<\/code> \uc0c1\uc790\uc5d0 \ub123\uc5b4\ub77c.&#8221;<\/em><\/p>\n\n<div class=\"databox\">\n  <p><strong>\ud83d\udccc \ubcc0\uc218 \uc774\ub984\uc758 4\uac00\uc9c0 \uaddc\uce59<\/strong><\/p>\n  <p>\u2460 \uc601\ubb38\uc790\u00b7\uc22b\uc790\u00b7\uc5b8\ub354\uc2a4\ucf54\uc5b4(_)\ub9cc \uac00\ub2a5 \u2014 <code>user_name<\/code> \u2713 \/ <code>user-name<\/code> \u2717<\/p>\n  <p>\u2461 \uc22b\uc790\ub85c \uc2dc\uc791 \uae08\uc9c0 \u2014 <code>name1<\/code> \u2713 \/ <code>1name<\/code> \u2717<\/p>\n  <p>\u2462 \uc608\uc57d\uc5b4(<code>if<\/code>, <code>for<\/code>, <code>class<\/code>, <code>print<\/code>) \uae08\uc9c0<\/p>\n  <p>\u2463 \uad00\ub840\uc0c1 \uc18c\ubb38\uc790+\uc5b8\ub354\uc2a4\ucf54\uc5b4 (snake_case). <code>userName<\/code> \ubcf4\ub2e4 <code>user_name<\/code>.<\/p>\n<\/div>\n\n<p>\ud55c\uad6d\uc5b4 \ubcc0\uc218\uba85 <code>\uc774\ub984 = \"\uc900\uc131\"<\/code> \ub3c4 \ud30c\uc774\uc36c 3 \uc5d0\uc11c\ub294 \ub3d9\uc791\uc740 \ud569\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \ub77c\uc774\ube0c\ub7ec\ub9ac\u00b7\ub3d9\ub8cc \ucf54\ub4dc\uc640 \uc11e\uc774\ub294 \uc21c\uac04 \uae68\uc9c0\ub294 \uc704\ud5d8\uc774 \ucee4\uc11c <strong>\uc2e4\ubb34\uc5d0\uc11c \ud55c\uae00 \ubcc0\uc218\uba85\uc740 \uc548 \uc501\ub2c8\ub2e4<\/strong>. \ud559\uc2b5 \ub54c\ubd80\ud130 \uc601\ubb38 snake_case \uc2b5\uad00\uc744.<\/p>\n\n<h2>\ub458\uc9f8 \uc904 \u2014 print \uc640 f-string \uc758 \ub9cc\ub0a8<\/h2>\n\n<p><code>print(f\"\uc548\ub155\ud558\uc138\uc694, {name}\ub2d8!\")<\/code>. \uac00\uc7a5 \uc790\uc8fc \uc4f0\ub294 \ud328\ud134\uc774\ub77c \uc5ec\uae30\uc11c \ub450 \uac00\uc9c0\ub97c \ub3d9\uc2dc\uc5d0 \ubc30\uc6c1\ub2c8\ub2e4.<\/p>\n\n<p><code>print(...)<\/code> \ub294 \ud654\uba74\uc5d0 \uac12\uc744 <strong>\uadf8\ub300\ub85c \ucd9c\ub825\ud558\uace0 \uc904\ubc14\uafc8<\/strong>\ud569\ub2c8\ub2e4. \uad04\ud638 \uc548\uc5d0 \ubb34\uc5c7\uc744 \ub123\ub4e0 (\uc22b\uc790\u00b7\ubb38\uc790\uc5f4\u00b7\uacc4\uc0b0\uc2dd\u00b7\ub2e4\ub978 \ud568\uc218\uc758 \uacb0\uacfc) \ubc1b\uc544\uc11c \ucc0d\uc5b4\uc694.<\/p>\n\n<p>\ubb38\uc790\uc5f4 \uc55e\uc758 <code>f<\/code> \uac00 <strong>f-string<\/strong>(formatted string) \uc758 \uc2e0\ud638\uc785\ub2c8\ub2e4. f \uac00 \ubd99\uc740 \ubb38\uc790\uc5f4 \uc548\uc5d0\uc11c\ub294 <code>{ }<\/code> \uc0ac\uc774\uc5d0 \ubcc0\uc218\ub098 \uc2dd\uc744 \ub123\uc744 \uc218 \uc788\uc5b4\uc694. \ud30c\uc774\uc36c\uc774 \uadf8 \uc790\ub9ac\ub97c \ubcc0\uc218\uc758 <strong>\ud604\uc7ac \uac12<\/strong>\uc73c\ub85c \uc790\ub3d9 \uce58\ud658\ud569\ub2c8\ub2e4.<\/p>\n\n<pre><code>name = \"\uc900\uc131\"\nprint(f\"\uc548\ub155, {name}!\")       # \uc548\ub155, \uc900\uc131!\nprint(f\"\ub0b4\ub144: {2026 + 1}\ub144\")   # \ub0b4\ub144: 2027\ub144\nprint(f\"3 \uacf1\ud558\uae30 5 = {3*5}\")   # 3 \uacf1\ud558\uae30 5 = 15<\/code><\/pre>\n\n<p>\uc61b\ub0a0 \ud30c\uc774\uc36c\uc5d0\ub294 <code>\"%s \ub2d8\" % name<\/code> \uc774\ub098 <code>\"{}\ub2d8\".format(name)<\/code> \uac19\uc740 \ubc29\ubc95\ub3c4 \uc788\uc5c8\ub294\ub370, f-string(3.6+) \uc774 \ub098\uc628 \ub4a4\ub85c\ub294 <strong>\uac70\uc758 \ubaa8\ub450 f-string \ub9cc \uc501\ub2c8\ub2e4<\/strong>. \uc9e7\uace0 \uc77d\uae30 \uc26c\uc6cc\uc11c\uc694. \uc61b \ucf54\ub4dc\ub97c \ubd10\uc57c \ud560 \ub54c\ub9cc \ub450 \ubc29\ubc95\ub3c4 \uc54c\uc544\ub450\uba74 \ub429\ub2c8\ub2e4.<\/p>\n\n<h2>\uc14b\uc9f8 \uc904 \u2014 \ub0b4\uc7a5 \ud568\uc218 len \uc73c\ub85c \uae00\uc790 \uc218 \uc138\uae30<\/h2>\n\n<p><code>print(f\"\uc774\ub984 \uae00\uc790 \uc218: {len(name)}\")<\/code>. \uc0c8\ub85c \ub4f1\uc7a5\ud55c \uac8c <code>len(...)<\/code> \uc778\ub370, \uc774\uac74 <strong>\ub0b4\uc7a5 \ud568\uc218<\/strong>(built-in) \uc911 \ud558\ub098\uc785\ub2c8\ub2e4. \ubcc4\ub3c4 \uc124\uce58\u00b7import \uc5c6\uc774 \uadf8\ub0e5 \ubd80\ub974\uba74 \ub3d9\uc791\ud574\uc694. \ud30c\uc774\uc36c\uc740 70\uc5ec \uac1c\uc758 \ub0b4\uc7a5 \ud568\uc218\ub97c \uae30\ubcf8 \uc81c\uacf5\ud569\ub2c8\ub2e4 \u2014 <code>print\u00b7input\u00b7len\u00b7range\u00b7sum\u00b7max\u00b7min\u00b7int\u00b7str\u00b7list<\/code> \uac19\uc740 \uac83\ub4e4. \uc774\ub4e4\uc774 \uc785\ubb38 2\uc8fc\ub97c \ucc45\uc784\uc9d1\ub2c8\ub2e4.<\/p>\n\n<p><code>len<\/code> \uc740 &#8220;\uae38\uc774&#8221; \uc758 length. \ubb38\uc790\uc5f4\uc744 \ub123\uc73c\uba74 \uae00\uc790 \uc218, \ub9ac\uc2a4\ud2b8\ub97c \ub123\uc73c\uba74 \ud56d\ubaa9 \uc218, \ub515\uc154\ub108\ub9ac\ub97c \ub123\uc73c\uba74 \ud0a4 \uac1c\uc218\ub97c \ub3cc\ub824\uc90d\ub2c8\ub2e4.<\/p>\n\n<pre><code>len(\"Hello\")        # 5\nlen(\"\uc548\ub155\ud558\uc138\uc694\")     # 5  (\ud55c \uae00\uc790 1\ub85c \uacc4\uc0b0)\nlen([1, 2, 3, 4])   # 4  (\ub9ac\uc2a4\ud2b8 \ud56d\ubaa9 \uc218)\nlen(\"\")             # 0  (\ube48 \ubb38\uc790\uc5f4)<\/code><\/pre>\n\n<p>f-string \uc758 <code>{ }<\/code> \uc548\uc5d0\ub294 \ubcc0\uc218\ubfd0 \uc544\ub2c8\ub77c <strong>\uc2dd\u00b7\ud568\uc218 \ud638\ucd9c \uacb0\uacfc<\/strong>\ub3c4 \ub4e4\uc5b4\uac08 \uc218 \uc788\ub2e4\ub294 \uac8c \uc14b\uc9f8 \uc904\uc758 \uc9c4\uc9dc \ud3ec\uc778\ud2b8. <code>{len(name)}<\/code> \ucc98\ub7fc \ud568\uc218 \ud638\ucd9c\uc744 \ud1b5\uc9f8\ub85c \ubc15\uc744 \uc218 \uc788\uc5b4 \ubcf4\uc870 \ubcc0\uc218\ub97c \ub9e4\ubc88 \ub9cc\ub4e4 \ud544\uc694\uac00 \uc5c6\uc5b4\uc694.<\/p>\n\n<h2>\ucd08\ubcf4\uac00 \uc790\uc8fc \ube60\uc9c0\ub294 \ud568\uc815 4\uac00\uc9c0<\/h2>\n\n<div class=\"tablewrap\">\n<table>\n  <thead>\n    <tr><th>\ud568\uc815<\/th><th>\uc99d\uc0c1<\/th><th>\uc6d0\uc778\u00b7\ud574\uacb0<\/th><\/tr>\n  <\/thead>\n  <tbody>\n    <tr><td>\ub4e4\uc5ec\uc4f0\uae30<\/td><td data-label=\"\uc99d\uc0c1\"><code>IndentationError<\/code><\/td><td data-label=\"\uc6d0\uc778\u00b7\ud574\uacb0\">\ud0ed\uacfc \uc2a4\ud398\uc774\uc2a4 \uc11e\uc784 \ub610\ub294 \ud568\uc218 \uc548\uc5d0\uc11c \uc5b4\uae0b\ub0a8. VS Code \uc5d0\uc11c <kbd>Ctrl+Shift+P<\/kbd> \u2192 &#8220;Convert Indentation to Spaces&#8221;<\/td><\/tr>\n    <tr><td>\ub530\uc634\ud45c \uc9dd<\/td><td data-label=\"\uc99d\uc0c1\"><code>SyntaxError<\/code><\/td><td data-label=\"\uc6d0\uc778\u00b7\ud574\uacb0\"><code>\"\uc548\ub155'<\/code> \ucc98\ub7fc \ud070\ub530\uc634\ud45c\u00b7\uc791\uc740\ub530\uc634\ud45c \uc11e\uc784. \ud55c \ubb38\uc790\uc5f4 \uc548\uc5d0\uc11c\ub294 \uac19\uc740 \uc885\ub958\ub85c \ud1b5\uc77c<\/td><\/tr>\n    <tr><td>\uad04\ud638 \ub204\ub77d<\/td><td data-label=\"\uc99d\uc0c1\"><code>SyntaxError<\/code> \ub610\ub294 \uc758\ub3c4\uc640 \ub2e4\ub978 \ub3d9\uc791<\/td><td data-label=\"\uc6d0\uc778\u00b7\ud574\uacb0\"><code>print \"hi\"<\/code> \uac00 \uc544\ub2c8\ub77c <code>print(\"hi\")<\/code>. \ud30c\uc774\uc36c 2 \uc2dc\uc808 \ubb38\ubc95\uc740 \uc548 \uba39\uc2b5\ub2c8\ub2e4<\/td><\/tr>\n    <tr><td>input \uacb0\uacfc \uc790\ub3d9 \ubb38\uc790\uc5f4<\/td><td data-label=\"\uc99d\uc0c1\"><code>TypeError: can only concatenate str<\/code><\/td><td data-label=\"\uc6d0\uc778\u00b7\ud574\uacb0\"><code>input()<\/code> \uacb0\uacfc\ub294 \ud56d\uc0c1 \ubb38\uc790\uc5f4. \uc22b\uc790\ub85c \uc4f0\ub824\uba74 <code>int(input())<\/code> \ub610\ub294 <code>float(input())<\/code> \ub85c \ubcc0\ud658<\/td><\/tr>\n  <\/tbody>\n<\/table>\n<\/div>\n\n<p>\ud2b9\ud788 \ub9c8\uc9c0\ub9c9 \ud568\uc815\uc774 \uc785\ubb38\uc790 1\ubc88 \ud568\uc815\uc785\ub2c8\ub2e4. <code>age = input(\"\ub098\uc774: \")<\/code> \ub2e4\uc74c\uc5d0 <code>age + 1<\/code> \uc744 \ud558\uba74 <em>TypeError<\/em>. <code>\"30\" + 1<\/code> \uc740 \uc548 \ub418\uac70\ub4e0\uc694. <code>age = int(input(\"\ub098\uc774: \"))<\/code> \ucc98\ub7fc \ubcc0\ud658\uc744 \uac19\uc774 \ud569\ub2c8\ub2e4.<\/p>\n\n<div class=\"warnbox\">\n  <strong>\u26a0\ufe0f \uc5d0\ub7ec \uba54\uc2dc\uc9c0\ub294 \uce5c\uad6c\ub2e4.<\/strong> \ube68\uac04 \uae00\uc528\uac00 \ub5a0\ub3c4 \ub2f9\ud669 X. \ub9c8\uc9c0\ub9c9 \uc904\uc5d0 \uc5d0\ub7ec \uc885\ub958(\uc608: <code>NameError: name 'nmae' is not defined<\/code>)\uac00 \uc801\ud600 \uc788\uc5b4\uc694. 99% \uc758 \ub2f5\uc740 <em>&#8220;\uc5d0\ub7ec \uba54\uc2dc\uc9c0\ub97c \uac80\uc0c9\ucc3d\uc5d0 \uadf8\ub300\ub85c \ubd99\uc5ec\ub123\uae30&#8221;<\/em> \ud558\uba74 5\ucd08 \ub9cc\uc5d0 \ub098\uc635\ub2c8\ub2e4.\n<\/div>\n\n<h2>\ub9c8\ubb34\ub9ac \u2014 \uc9c1\uc811 \ubcc0\ud615\ud574\ubcf4\uae30<\/h2>\n\n<p>\ucc45\uc73c\ub85c \uc77d\uae30\ub9cc \ud558\uba74 \uc190\uc774 \uc548 \ub530\ub77c\uc635\ub2c8\ub2e4. <code>hello.py<\/code> \ub97c \ubcf5\uc0ac\ud574 <code>hello2.py<\/code> \ub85c \ub9cc\ub4e4\uace0, \uc9c1\uc811 \ubcc0\ud615\ud574\ubcf4\uc138\uc694. \uc138 \uac00\uc9c0 \ubbf8\uc158:<\/p>\n\n<ol>\n  <li>&#8220;\uc774\ub984&#8221; \ub9d0\uace0 &#8220;\uc88b\uc544\ud558\ub294 \uc74c\uc2dd&#8221; \uc744 \ubb3b\uace0, \uae00\uc790 \uc218 \ub300\uc2e0 <em>&#8220;{\uc74c\uc2dd}\uc744 \uc88b\uc544\ud558\uc2dc\ub294\uad70\uc694!&#8221;<\/em> \ucd9c\ub825<\/li>\n  <li>\uc774\ub984\uacfc \ub098\uc774\ub97c \ub458 \ub2e4 \uc785\ub825\ubc1b\uc544 <em>&#8220;{name}\ub2d8\uc740 {age}\uc0b4, \ub0b4\ub144\uc5d4 {age+1}\uc0b4&#8221;<\/em> \ucd9c\ub825 (\ud78c\ud2b8: <code>int()<\/code> \ud544\uc694)<\/li>\n  <li>\uc774\ub984 \uae00\uc790 \uc218\uac00 3 \uc774\uc0c1\uc774\uba74 <em>&#8220;\uc774\ub984\uc774 \uae41\ub2c8\ub2e4&#8221;<\/em> \ucd9c\ub825 (\ud78c\ud2b8: if \ubb38\uc740 3\ud3b8\uc5d0\uc11c, \uc77c\ub2e8 \uc2dc\ub3c4\ud574\ubcf4\uace0 \ub9c9\ud600\ub3c4 OK)<\/li>\n<\/ol>\n\n<p>\ub9c9\ud614\ub2e4\uba74 \uc5d0\ub7ec \uba54\uc2dc\uc9c0\ub97c \uadf8\ub300\ub85c \uba54\ubaa8\ud574\ub450\uc138\uc694. 3\ud3b8 \uc2dc\uc791\uc5d0\uc11c \ud480\uc774\ub3c4 \uac19\uc774 \ub2e4\ub8f9\ub2c8\ub2e4.<\/p>\n\n<div class=\"cta\">\n  <h3>\ub2e4\uc74c \ud3b8 \ubbf8\ub9ac\ubcf4\uae30<\/h3>\n  <p>3\ud3b8 \u2014 &#8220;\ud30c\uc774\uc36c \ubcc0\uc218\uc640 \uc790\ub8cc\ud615&#8221;: \ubb38\uc790\uc5f4\u00b7\uc815\uc218\u00b7\uc2e4\uc218\u00b7\ubd88\ub9ac\uc5b8\uc774 \ubb34\uc5c7\uc774 \ub2e4\ub978\uc9c0, <code>type()<\/code> \uc73c\ub85c \uc5b4\ub5bb\uac8c \ud655\uc778\ud558\ub294\uc9c0, \ubcc0\ud658\uc740 \uc5b4\ub5bb\uac8c \ud558\ub294\uc9c0.<\/p>\n<\/div>\n\n<div class=\"series-nav\">\n  <strong>\ud83d\udcda 27\ud3b8 \ud30c\uc774\uc36c \uad50\uc7ac \uc2dc\ub9ac\uc988 \u2014 2\/27\ud3b8<\/strong><br>\n  \u2190 1\ud3b8 &#8220;\ud30c\uc774\uc36c\uc774\ub780 \ubb34\uc5c7\uc778\uac00&#8221; \u00b7 \ub2e4\uc74c: 3\ud3b8 &#8220;\ud30c\uc774\uc36c \ubcc0\uc218\uc640 \uc790\ub8cc\ud615&#8221;\n<\/div>\n\n<\/article>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>hello.py \uc138 \uc904\uc744 \ud55c \uc904\uc529 \ud574\ubd80\ud569\ub2c8\ub2e4. input\u00b7print\u00b7f-string\u00b7len \ub2e4\uc12f \uac00\uc9c0\uc640 \ucd08\ubcf4 \ud568\uc815 4\uac00\uc9c0. 27\ud3b8 \ud30c\uc774\uc36c \uad50\uc7ac 2\ud3b8.<\/p>\n","protected":false},"author":1,"featured_media":581,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/posts\/214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/comments?post=214"}],"version-history":[{"count":1,"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/posts\/214\/revisions"}],"predecessor-version":[{"id":608,"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/posts\/214\/revisions\/608"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/media\/581"}],"wp:attachment":[{"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/media?parent=214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/categories?post=214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/junai.ai\/blog\/wp-json\/wp\/v2\/tags?post=214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}