{"id":953,"date":"2021-03-09T14:40:41","date_gmt":"2021-03-09T05:40:41","guid":{"rendered":"http:\/\/cedartrees.co.kr\/?p=953"},"modified":"2021-04-03T19:04:56","modified_gmt":"2021-04-03T10:04:56","slug":"python-basic-02","status":"publish","type":"post","link":"http:\/\/blog.cedartrees.co.kr\/index.php\/2021\/03\/09\/python-basic-02\/","title":{"rendered":"\ud30c\uc774\uc36c \uc790\ub8cc\ud615"},"content":{"rendered":"\n

\ud30c\uc774\uc36c \uc790\ub8cc\ud615 – \ub9ac\uc2a4\ud2b8<\/span><\/strong><\/p>\n\n\n\n

\ud30c\uc774\uc36c\uc5d0\ub294 \uc5ec\ub7ec \uac1c\uc758 \uac12\uc744 \ud558\ub098\uc758 \ub370\uc774\ud130 \uc800\uc7a5\uc18c\uc5d0 \ub2f4\uc544\uc11c \uad00\ub9ac \ud560 \uc218 \uc788\ub294 \ub9ac\uc2a4\ud2b8(List)\ub77c\ub294 \uc790\ub8cc\ud615\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \ub9ac\uc2a4\ud2b8\uc5d0\ub294 \uc5ec\ub7ec\uac1c\uc758 \uac12\uc744 \ud558\ub098\uc758 \ubcc0\uc218\uc5d0 \ub2f4\uc744 \uc218 \uc788\uae30 \ub54c\ubb38\uc5d0 \uac70\uc758 \ubaa8\ub4e0 \ucf54\ub4dc\uc5d0 \uc0ac\uc6a9\ub41c\ub2e4\uace0 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <\/p>\n\n\n\n

\uc608\ub97c \ub4e4\uc5b4\uc11c \ud559\uc0dd\uc758 10\uac1c \uacfc\ubaa9\uc5d0 \ub300\ud55c \uc131\uc801\uc744 \uc785\ub825\ud560 \ub54c\uc5d0 \uad6d\uc5b4,\uc601\uc5b4,\uc218\ud559 \ub4f1 10\uc5ec\uac1c\uc758 \uacfc\ubaa9\uc744 \uac01\uac01 \ubcc0\uc218\uc5d0 \ub2f4\uc9c0 \uc54a\uace0 \ud558\ub098\uc758 \ubcc0\uc218\uba85\uc744 \uc120\uc5b8\ud558\uace0 [99,98,89 …] \uc640 \uac19\uc774 \ucc28\ub840\ub85c \uc131\uc801\uc744 \uc800\uc7a5\ud558\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4. \uc774\ub54c \uc911\uc694\ud55c \uac83\uc774 \uc788\ub2e4\uba74 \uc800\uc7a5\uc758 \uc21c\uc11c\uc785\ub2c8\ub2e4. \ubaa8\ub4e0 \ud559\uc0dd\uc758 \uacfc\ubaa9\uc774 \uc77c\uc815\ud55c \uc21c\uc11c\ub300\ub85c \uc815\ub82c\ub418\uc5b4\uc57c \uc815\uc0c1\uc801\uc778 \uacb0\uacfc\ub97c \uc5bb\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

score_list = [99,98,89,78,80...] #\uac01 \uacfc\ubaa9\uc758 \uc810\uc218\ub97c \ud558\ub098\uc758 \ubcc0\uc218\uc5d0 \uc800\uc7a5\n\ndummy_list = [99,98,89,'A',3.4] #\ub2e4\ub978 \ud615\uc758 \uc790\ub8cc\ub97c \ub3d9\uc77c\ud55c \ub9ac\uc2a4\ud2b8\uc5d0 \uc800\uc7a5\ud560 \uc218 \uc788\uc74c\nprint([type(n) for n in dummy_list])\n\uacb0\uacfc : [<class 'int'>, <class 'int'>, <class 'int'>, <class 'str'>, <class 'float'>]\n\nlen(dummy_list)\n\uacb0\uacfc : 5<\/pre>\n\n\n\n
\ub610 \ub300\ubd80\ubd84 \uacbd\uc6b0\ub294 \ud558\ub098\uc758 \ub9ac\uc2a4\ud2b8\uc5d0 \uac19\uc740 \uc790\ub8cc\ud615\uc744 \uc785\ub825\ud558\uc9c0\ub9cc \ub2e4\ub978 \uc790\ub8cc\ud615\uc744 \uc785\ub825\ud558\ub294 \uac83\ub3c4 \uac00\ub2a5\ud569\ub2c8\ub2e4. \ubc30\uc5f4\uc5d0 \uc120\uc5b8\ub41c \uac12\uc5d0 \uc811\uadfc\ud558\uae30 \uc704\ud574\uc11c\ub294 \ubcc0\uc218[index] \ud615\ud0dc\ub85c \uc0ac\uc6a9\ud558\uba74 \ub429\ub2c8\ub2e4. \uc911\uc694\ud55c \uac83\uc740 index\ub294 0\ubd80\ud130 \uc2dc\uc791\ub41c\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4. <\/p>\n\n\n\n
\ubc30\uc5f4\uc758 \ud06c\uae30\ub97c \uc54c\uae30 \uc704\ud574\uc11c\ub294 len()\uc774\ub77c\ub294 \ub0b4\uc7a5\ud568\uc218\ub97c \uc0ac\uc6a9\ud574\uc11c \ud655\uc778 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
\ub9ac\uc2a4\ud2b8\uc5d0\uc11c \uaf2d \uc54c\uc544\uc57c \ud560 \uc911\uc694\ud55c\uac83 \uc911\uc5d0 \ud558\ub098\ub294 \uc2ac\ub77c\uc774\uc2f1(Slicing)\uc758 \uac1c\ub150\uc785\ub2c8\ub2e4. \uc774\uac83\uc740 \ub9ac\uc2a4\ud2b8\uc5d0\uc11c \uc6d0\ud558\ub294 \ubc94\uc704\ub97c \uc9c0\uc815\ud574\uc11c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uad49\uc7a5\ud788 \ud3b8\ub9ac\ud558\uace0 \ub9ce\uc774 \uc0ac\uc6a9\ud558\ub294 \uac1c\ub150\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n
dl = [0,1,2,3,4,5,6,7,8,9]\nprint(dl[0:3]) #[0, 1, 2]\nprint(dl[5:]) #[5, 6, 7, 8, 9]\nprint(dl[3:-1]) #[3, 4, 5, 6, 7, 8]\n\ncl = 'hello world'\nprint(cl[0:5]) #hello<\/pre>\n\n\n\n
\uc704\uc758 \uc608\uc81c\uc5d0\uc11c \ubcf4\ub2e4\uc2dc\ud53c \ub9ac\uc2a4\ud2b8\uc758 \uc778\ub371\uc2a4 \uac12\uc744 \ud65c\uc6a9\ud574\uc11c \ud574\ub2f9 \uc790\ub8cc\ub97c \ucd9c\ub825\ud569\ub2c8\ub2e4. 
\uc54c\uc544\ub450\uba74 \uc88b\uc740 \uac83\uc740 \uc774\uac83\uc774 \ub9ac\uc2a4\ud2b8 \ubc30\uc5f4\uc5d0\uc11c\ub9cc \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \ubb38\uc790 \ubc30\uc5f4\uc5d0\uc11c\ub3c4 \ub3d9\uc77c\ud558\uac8c \uc0ac\uc6a9\ud560 \uc218 \uc788\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4. \ub2e4\ub978 \uc5b8\uc5b4\uc758 substring\uacfc \uac19\uc740 \uac1c\ub150\uc785\ub2c8\ub2e4.  \uc55e\uc5d0 -(minus) \uae30\ud638\ub97c \ubd99\uc774\uba74 \ub9c8\uc9c0\ub9c9\uc5d0\uc11c\ubd80\ud130 \uce74\uc6b4\ud2b8\ub97c \ud558\uae30 \ub54c\ubb38\uc5d0 \uc774\ub97c \uc751\uc6a9\ud574\uc11c \ub2e4\uc591\ud55c \ud65c\uc6a9\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
\ud30c\uc774\uc36c \uc790\ub8cc\ud615 – \ub515\uc154\ub108\ub9ac<\/span><\/strong><\/p>\n\n\n\n
\ub9ac\uc2a4\ud2b8\uc640 \ud568\uaed8 \ub610 \ud558\ub098\uc758 \uc911\uc694\ud55c \ub370\uc774\ud130 \uc800\uc7a5\uc18c\ub294 \ub515\uc154\ub108\ub9ac(Dictionary)\uc785\ub2c8\ub2e4. <\/p>\n\n\n\n
\ub515\uc154\ub108\ub9ac\ub294 \ud0a4(Key), \uac12(Value)\uc758 \uc30d\uc73c\ub85c \ub418\uc5b4 \uc788\ub294 \ub370\uc774\ud130 \uc800\uc7a5\uc18c\uc785\ub2c8\ub2e4. Java\uc5d0 \uc775\uc219\ud558\uc2e0 \ubd84\uc740 \ub9f5(Map)\uc774\ub77c\ub294 \uac1d\uccb4\ub97c \uc0dd\uac01\ud558\uc2dc\uba74 \ub418\uaca0\uc2b5\ub2c8\ub2e4. \ub515\uc154\ub108\ub9ac\ub3c4 \uc120\uc5b8\uacfc \ud65c\uc6a9\uc774 \uac04\ub2e8\ud569\ub2c8\ub2e4. \ud574\ub2f9 \ub0b4\uc6a9\uc744 \ucd9c\ub825\ud558\uae30 \uc704\ud574\uc11c\ub294 \ud0a4(Key) \uac12\uc744 \uc785\ub825\ud558\uba74 \uadf8\uc5d0 \ud574\ub2f9\ud558\ub294 \uac12(Value)\uac00 \ucd9c\ub825\ub418\ub294 \uad6c\uc870\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n
score_dict = {'kor':98, 'eng':90, 'math':100, 'hist':93} #\uacfc\ubaa9\uc744 Key\ub85c \uc120\uc5b8\ud558\uace0 \uc131\uc801\uc744 Value\ub85c \uc815\uc758\nprint(score_dict['kor']) #98\n\nprint(score_dict.keys()) #dict_keys(['kor', 'eng', 'math', 'hist'])\nprint(sorted(score_dict.keys())) #['eng', 'hist', 'kor', 'math']\nprint(score_dict.values()) #dict_values([98, 90, 100, 93])<\/pre>\n\n\n\n
\uc774\uc804\uc5d0 \ub9ac\uc2a4\ud2b8\uc5d0\uc11c  \uc131\uc801\uc744 \uc785\ub825\ud560 \ub54c\uc5d0 \uc21c\uc11c\uac00 \uc911\uc694\ud588\ub2e4\uba74 \ub515\uc154\ub108\ub9ac\uc5d0\uc11c\ub294 Key\uac00 \uc874\uc7ac\ud558\uae30 \ub54c\ubb38\uc5d0 \uc21c\uc11c\ub294 \uc911\uc694\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ub515\uc154\ub108\ub9ac\uc5d0\uc11c \ud558\ub098 \uc8fc\uc758\ud574\uc57c \ud560 \uac83\uc740  Key \uac00 \uc911\ubcf5\ub418\uc9c0 \uc54a\ub3c4\ub85d \uad00\ub9ac\ud574\uc57c \ud55c\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n
\ub515\uc154\ub108\ub9ac\ub294 Key \uac12\uc744 \ucd94\ucd9c\ud55c\ub2e4\uac70\ub098 \uc774\ub97c \uc815\ub82c\ud558\ub294 \uae30\ub2a5\ub4e4\uc744 \uc81c\uacf5\ud558\uae30 \ub54c\ubb38\uc5d0 \uc774\ub97c \ud65c\uc6a9\ud574\uc11c \ub2e4\uc591\ud55c \ub370\uc774\ud130\ub97c \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
\ud30c\uc774\uc36c \uc790\ub8cc\ud615 – \ud29c\ud50c<\/span><\/strong><\/p>\n\n\n\n
\ud29c\ud50c(Tuple)\uc740 \ub9ac\uc2a4\ud2b8\uc640 \uc720\uc0ac\ud558\uc9c0\ub9cc \ucc28\uc774\uac00 \uc788\ub2e4\uba74 \ub0b4\uc6a9\uc744 \ubc14\uafc0 \uc218 \uc5c6\ub2e4\ub294 \uc810\uc5d0 \ud070 \ucc28\uc774\uac00 \uc788\uc2b5\ub2c8\ub2e4.  tutple\ub85c \uc120\uc5b8\ud55c \ubcc0\uc218\uc5d0 \uc5b4\ub5a4 \ub2e4\ub978 \uac12\uc744 \uc801\uc6a9\ud558\uace0\uc790 \ud558\uba74 ‘tuple’ object does not support item assignment \ub77c\ub294 \uc5d0\ub7ec \uba54\uc138\uc9c0\ub97c \ud45c\uc2dc\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
dummy_tuple = (99,88,87,94,92)\nprint(dummy_tuple[0]) #99\n\ndummy_tuple[0] = 100 #TypeError: 'tuple' object does not support item assignment<\/pre>\n\n\n\n
\ud30c\uc774\uc36c \uc790\ub8cc\ud615 – \uc9d1\ud569<\/span><\/strong><\/p>\n\n\n\n
\uc9d1\ud569(Set)\ub3c4 \ub9ac\uc2a4\ud2b8\uc640 \uc720\uc0ac\ud55c \uac1c\ub150\uc785\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uac01 \uc694\uc18c\uac04\uc758 \uc21c\uc11c\ub294 \uc874\uc7ac\ud558\uc9c0 \uc54a\uc73c\uba70 \uac01 \uc694\uc18c\uac04\uc758 \uc911\ubcf5\ub41c \uac12\uc744 \ud5c8\uc6a9\ud558\uc9c4 \uc54a\uc2b5\ub2c8\ub2e4. \ub610 \uc9d1\ud569\uc758 \uc218\ud559\uc801\uc778 \uc5f0\uc0b0\uc774 \uac00\ub2a5\ud558\ub2e4\ub294 \ud2b9\uc9d5\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
dummy_set0 = set(list(score_dict.keys()))\ndummy_set1 = set(['sci','kor'])\n\nprint(dummy_set0 | dummy_set1) # \ud569\uc9d1\ud569 {'math', 'eng', 'sci', 'kor', 'hist'}\nprint(dummy_set0 - dummy_set1) # \ucc28\uc9d1\ud569 {'math', 'eng', 'hist'}\nprint(dummy_set0 & dummy_set1) # \uad50\uc9d1\ud569 {'kor'}<\/pre>\n\n\n\n
\uc774\uc804\uc5d0 \uc0ac\uc6a9\ud588\ub358 score_dict\uc758 \ud0a4 \uac12\uc744 \ubaa8\uc544\uc11c \ud558\ub098\uc758 \ub9ac\uc2a4\ud2b8\ub85c \ub9cc\ub4e0 \ud6c4\uc5d0 \uc774\uac83\uc744 \ub2e4\uc2dc \uc9d1\ud569\uc73c\ub85c \uc120\uc5b8\ud569\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \ub610 \ud558\ub098\uc758 \uc9d1\ud569\uc744 \uc0dd\uc131\ud569\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \uc774 \uc9d1\ud569\uc744 \ud65c\uc6a9\ud574\uc11c \uc9d1\ud569 \uc5f0\uc0b0\uc744 \uc218\ud589\ud574\ubd05\ub2c8\ub2e4.<\/p>\n\n\n\n
\uc9d1\ud569 \uc5f0\uc0b0\uc740 \ud569\uc9d1\ud569, \ucc28\uc9d1\ud569, \uad50\uc9d1\ud569\uc774 \uc788\uc2b5\ub2c8\ub2e4. 
\ud569\uc9d1\ud569\uc740 ‘+’ \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uace0 ‘|’ \uc5f0\uc0b0\uc790\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uc9d1\ud569\uc740 \uc911\ubcf5\uc744 \ud5c8\uc6a9\ud558\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc5d0 \ub450 \uc9d1\ud569\uc758 \uc694\uc18c\uac00 \ud558\ub098\uc529 \uc874\uc7ac\ud558\uac8c\ub429\ub2c8\ub2e4. 
\ucc28\uc9d1\ud569\uc740 \uacf5\ud1b5\ub41c \uc694\uc18c\ub97c \uc0ad\uc81c\ud569\ub2c8\ub2e4. \uad50\uc9d1\ud569\uc740 \uacf5\ud1b5\ub41c \uc694\uc18c\ub9cc \ucd94\ucd9c\ud569\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"
\ud30c\uc774\uc36c \uc790\ub8cc\ud615 – \ub9ac\uc2a4\ud2b8 \ud30c\uc774\uc36c\uc5d0\ub294 \uc5ec\ub7ec \uac1c\uc758 \uac12\uc744 \ud558\ub098\uc758 \ub370\uc774\ud130 \uc800\uc7a5\uc18c\uc5d0 \ub2f4\uc544\uc11c \uad00\ub9ac \ud560 \uc218 \uc788\ub294 \ub9ac\uc2a4\ud2b8(List)\ub77c\ub294 \uc790\ub8cc\ud615\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \ub9ac\uc2a4\ud2b8\uc5d0\ub294 \uc5ec\ub7ec\uac1c\uc758 \uac12\uc744 \ud558\ub098\uc758 \ubcc0\uc218\uc5d0 \ub2f4\uc744 \uc218 \uc788\uae30 \ub54c\ubb38\uc5d0 \uac70\uc758 \ubaa8\ub4e0 \ucf54\ub4dc\uc5d0 \uc0ac\uc6a9\ub41c\ub2e4\uace0 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4\uc11c \ud559\uc0dd\uc758 10\uac1c \uacfc\ubaa9\uc5d0 \ub300\ud55c \uc131\uc801\uc744 \uc785\ub825\ud560 \ub54c\uc5d0 \uad6d\uc5b4,\uc601\uc5b4,\uc218\ud559 \ub4f1 10\uc5ec\uac1c\uc758 \uacfc\ubaa9\uc744 \uac01\uac01 \ubcc0\uc218\uc5d0 \ub2f4\uc9c0 \uc54a\uace0 \ud558\ub098\uc758 \ubcc0\uc218\uba85\uc744 … <\/p>\n
\ub354 \ubcf4\uae30 “\ud30c\uc774\uc36c \uc790\ub8cc\ud615”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18,17],"tags":[54,94,90,93,89],"_links":{"self":[{"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/posts\/953"}],"collection":[{"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/comments?post=953"}],"version-history":[{"count":9,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/posts\/953\/revisions"}],"predecessor-version":[{"id":965,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/posts\/953\/revisions\/965"}],"wp:attachment":[{"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/media?parent=953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/categories?post=953"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/tags?post=953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}