{"id":24071,"date":"2024-10-22T03:46:00","date_gmt":"2024-10-22T03:46:00","guid":{"rendered":"http:\/\/thelivesmart.com\/w\/?p=24071"},"modified":"2024-11-26T08:04:14","modified_gmt":"2024-11-26T08:04:14","slug":"python%ec%9d%98-%eb%a9%80%ed%8b%b0%ec%8a%a4%eb%a0%88%eb%94%a9-2%eb%8f%99%ea%b8%b0%ed%99%94","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/24071\/","title":{"rendered":"Python\uc758 \uba40\ud2f0\uc2a4\ub808\ub529 2(\ub3d9\uae30\ud654)"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\uc774 \uae30\uc0ac\uc5d0\uc11c\ub294 Python \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\uc5d0\uc11c&nbsp;<strong>\uba40\ud2f0\uc2a4\ub808\ub529<\/strong>&nbsp;\uc758 \uacbd\uc6b0 \uc2a4\ub808\ub4dc \ub3d9\uae30\ud654 \uac1c\ub150\uc5d0 \ub300\ud574 \uc124\uba85\ud569\ub2c8\ub2e4 .<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"Synchronization-between-threads\"><strong>\uc2a4\ub808\ub4dc \uac04 \ub3d9\uae30\ud654<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc2a4\ub808\ub4dc \ub3d9\uae30\ud654\ub294 \ub450 \uac1c \uc774\uc0c1\uc758 \ub3d9\uc2dc \uc2a4\ub808\ub4dc\uac00 \uc784\uacc4 \uc139\uc158<\/strong>&nbsp;\uc73c\ub85c \uc54c\ub824\uc9c4 \uc77c\ubd80 \ud2b9\uc815 \ud504\ub85c\uadf8\ub7a8 \uc138\uadf8\uba3c\ud2b8\ub97c \ub3d9\uc2dc\uc5d0 \uc2e4\ud589\ud558\uc9c0 \uc54a\ub3c4\ub85d \ud558\ub294 \uba54\ucee4\ub2c8\uc998\uc73c\ub85c \uc815\uc758\ub429\ub2c8\ub2e4&nbsp;.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\uc911\uc694 \uc139\uc158\uc740 \uacf5\uc720 \ub9ac\uc18c\uc2a4\uc5d0 \uc561\uc138\uc2a4\ud558\ub294 \ud504\ub85c\uadf8\ub7a8 \ubd80\ubd84\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\ub97c \ub4e4\uc5b4 \uc544\ub798 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc5d0\uc11c\ub294 3\uac1c\uc758 \uc2a4\ub808\ub4dc\uac00 \ub3d9\uc2dc\uc5d0 \uacf5\uc720 \ub9ac\uc18c\uc2a4 \ub610\ub294 \uc911\uc694 \uc139\uc158\uc5d0 \uc561\uc138\uc2a4\ud558\ub824\uace0 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"522\" height=\"232\" src=\"http:\/\/thelivesmart.com\/w\/wp-content\/uploads\/2024\/10\/img-2.png\" alt=\"\" class=\"wp-image-24072\" srcset=\"https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/10\/img-2.png 522w, https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/10\/img-2-300x133.png 300w\" sizes=\"auto, (max-width: 522px) 85vw, 522px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uacf5\uc720 \ub9ac\uc18c\uc2a4\uc5d0 \ub300\ud55c \ub3d9\uc2dc \uc561\uc138\uc2a4\ub294 \uacbd\uc7c1 \uc870\uac74<\/strong>&nbsp;\uc744 \ucd08\ub798\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4&nbsp;.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\uacbd\uc7c1 \uc870\uac74\uc740 \ub450 \uac1c \uc774\uc0c1\uc758 \uc2a4\ub808\ub4dc\uac00 \uacf5\uc720 \ub370\uc774\ud130\uc5d0 \uc561\uc138\uc2a4\ud560 \uc218 \uc788\uace0 \ub3d9\uc2dc\uc5d0 \ubcc0\uacbd\ud558\ub824\uace0 \ud560 \ub54c \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uacb0\uacfc\uc801\uc73c\ub85c \ubcc0\uc218 \uac12\uc740 \uc608\uce21\ud560 \uc218 \uc5c6\uc73c\uba70 \ud504\ub85c\uc138\uc2a4\uc758 \ucee8\ud14d\uc2a4\ud2b8 \uc804\ud658 \ud0c0\uc774\ubc0d\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\uacbd\uc7c1 \uc870\uac74\uc758 \uac1c\ub150\uc744 \uc774\ud574\ud558\ub824\uba74 \uc544\ub798 \ud504\ub85c\uadf8\ub7a8\uc744 \uace0\ub824\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>import threading# global variable xx = 0def increment():&nbsp;&nbsp;&nbsp;&nbsp;&#8220;&#8221;&#8221;&nbsp;&nbsp;&nbsp;&nbsp;function to increment global variable x&nbsp;&nbsp;&nbsp;&nbsp;&#8220;&#8221;&#8221;&nbsp;&nbsp;&nbsp;&nbsp;global x&nbsp;&nbsp;&nbsp;&nbsp;x += 1def thread_task():&nbsp;&nbsp;&nbsp;&nbsp;&#8220;&#8221;&#8221;&nbsp;&nbsp;&nbsp;&nbsp;task for thread&nbsp;&nbsp;&nbsp;&nbsp;calls increment function 100000 times.&nbsp;&nbsp;&nbsp;&nbsp;&#8220;&#8221;&#8221;&nbsp;&nbsp;&nbsp;&nbsp;for _ in range(100000):&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;increment()def main_task():&nbsp;&nbsp;&nbsp;&nbsp;global x&nbsp;&nbsp;&nbsp;&nbsp;# setting global variable x as 0&nbsp;&nbsp;&nbsp;&nbsp;x = 0&nbsp;&nbsp;&nbsp;&nbsp;# creating threads&nbsp;&nbsp;&nbsp;&nbsp;t1 = threading.Thread(target=thread_task)&nbsp;&nbsp;&nbsp;&nbsp;t2 = threading.Thread(target=thread_task)&nbsp;&nbsp;&nbsp;&nbsp;# start threads&nbsp;&nbsp;&nbsp;&nbsp;t1.start()&nbsp;&nbsp;&nbsp;&nbsp;t2.start()&nbsp;&nbsp;&nbsp;&nbsp;# wait until threads finish their job&nbsp;&nbsp;&nbsp;&nbsp;t1.join()&nbsp;&nbsp;&nbsp;&nbsp;t2.join()if __name__ == &#8220;__main__&#8221;:&nbsp;&nbsp;&nbsp;&nbsp;for i in range(10):&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;main_task()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print(&#8220;Iteration {0}: x = {1}&#8221;.format(i,x))<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uc0b0\ucd9c:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Iteration 0: x = 175005\nIteration 1: x = 200000\nIteration 2: x = 200000\nIteration 3: x = 169432\nIteration 4: x = 153316\nIteration 5: x = 200000\nIteration 6: x = 167322\nIteration 7: x = 200000\nIteration 8: x = 169917\nIteration 9: x = 153589<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc704 \ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>main_task<\/strong>\u00a0\ud568\uc218 \uc5d0\u00a0\ub450 \uac1c\uc758 \uc2a4\ub808\ub4dc\u00a0<strong>t1<\/strong>\u00a0\uacfc\u00a0<strong>t2\uac00<\/strong>\u00a0\uc0dd\uc131\ub418\uace0 \uc804\uc5ed \ubcc0\uc218\u00a0<strong>x<\/strong>\u00a0\uac00 0\uc73c\ub85c \uc124\uc815\ub429\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uac01 \uc2a4\ub808\ub4dc\uc5d0\ub294 \uc99d\ubd84<\/strong>\u00a0\ud568\uc218\uac00 100000\ubc88 \ud638\ucd9c\ub418\ub294\u00a0\ub300\uc0c1\u00a0\ud568\uc218\u00a0<strong>thread_task \uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/strong><\/li>\n\n\n\n<li><strong>increment<\/strong>\u00a0\ud568\uc218\ub294 \ud638\ucd9c\ud560 \ub54c\ub9c8\ub2e4 \uc804\uc5ed \ubcc0\uc218\u00a0<strong>x\ub97c<\/strong>\u00a01\uc529 \uc99d\uac00\uc2dc\ud0b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>x<\/strong>&nbsp;\uc758 \uc608\uc0c1 \ucd5c\uc885 \uac12 \uc740 200000\uc774\uc9c0\ub9cc&nbsp;<strong>main_task<\/strong>&nbsp;\ud568\uc218 \ub97c 10\ubc88 \ubc18\ubcf5\ud558\uc5ec \uc5bb\ub294&nbsp;\uac12\uc740 \uc77c\ubd80 \ub2e4\ub985\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774\ub294 \uacf5\uc720 \ubcc0\uc218&nbsp;<strong>x<\/strong>&nbsp;\uc5d0 \ub300\ud55c \uc2a4\ub808\ub4dc\uc758 \ub3d9\uc2dc \uc561\uc138\uc2a4\ub85c \uc778\ud574 \ubc1c\uc0dd\ud569\ub2c8\ub2e4 .&nbsp;<strong>x<\/strong>&nbsp;\uac12\uc758 \uc774\ub7ec\ud55c \uc608\uce21 \ubd88\uac00\ub2a5\uc131\uc740&nbsp;<strong>\uacbd\uc7c1 \uc870\uac74<\/strong>&nbsp;\uc5d0 \uc9c0\ub098\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4&nbsp;.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc544\ub798\uc5d0\ub294 \uc704 \ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c&nbsp;<strong>\uacbd\uc7c1 \uc870\uac74\uc774<\/strong>&nbsp;\uc5b4\ub5bb\uac8c \ubc1c\uc0dd\ud558\ub294\uc9c0 \ubcf4\uc5ec\uc8fc\ub294 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc774 \ub098\uc640 \uc788\uc2b5\ub2c8\ub2e4 .<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"821\" height=\"472\" src=\"http:\/\/thelivesmart.com\/w\/wp-content\/uploads\/2024\/10\/img_1-1.png\" alt=\"\" class=\"wp-image-24073\" srcset=\"https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/10\/img_1-1.png 821w, https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/10\/img_1-1-300x172.png 300w, https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/10\/img_1-1-768x442.png 768w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc704 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc5d0\uc11c x<\/strong>&nbsp;\uc758 \uc608\uc0c1 \uac12\uc740&nbsp;12\uc774\uc9c0\ub9cc \uacbd\uc7c1 \uc870\uac74\uc73c\ub85c \uc778\ud574 11\ub85c \ubc1d\ud600\uc84c\uc2b5\ub2c8\ub2e4!&nbsp;<br><br>\ub530\ub77c\uc11c \uc5ec\ub7ec \uc2a4\ub808\ub4dc \uac04\uc758 \uc801\uc808\ud55c \ub3d9\uae30\ud654\ub97c \uc704\ud55c \ub3c4\uad6c\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"Using-Locks\"><strong>\uc7a0\uae08 \uc0ac\uc6a9<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc2a4\ub808\ub529<\/strong>&nbsp;\ubaa8\ub4c8\uc740&nbsp;\uacbd\uc7c1 \uc870\uac74\uc744 \ucc98\ub9ac\ud558\uae30 \uc704\ud574&nbsp;<strong>Lock<\/strong>&nbsp;\ud074\ub798\uc2a4\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc7a0\uae08\uc740 \uc6b4\uc601 \uccb4\uc81c\uc5d0\uc11c \uc81c\uacf5\ud558\ub294&nbsp;<strong>Semaphore<\/strong>&nbsp;\uac1c\uccb4\ub97c \uc0ac\uc6a9\ud558\uc5ec \uad6c\ud604\ub429\ub2c8\ub2e4 .<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\uc138\ub9c8\ud3ec\uc5b4\ub294 \ubcd1\ub82c \ud504\ub85c\uadf8\ub798\ubc0d \ud658\uacbd\uc5d0\uc11c \uacf5\ud1b5 \ub9ac\uc18c\uc2a4\uc5d0 \ub300\ud55c \uc5ec\ub7ec \ud504\ub85c\uc138\uc2a4\/\uc2a4\ub808\ub4dc\uc758 \uc561\uc138\uc2a4\ub97c \uc81c\uc5b4\ud558\ub294 \u200b\u200b\ub3d9\uae30\ud654 \uac1c\uccb4\uc785\ub2c8\ub2e4. \uc774\ub294 \ub2e8\uc21c\ud788 \uac01 \ud504\ub85c\uc138\uc2a4\/\uc2a4\ub808\ub4dc\uac00 \ud655\uc778\ud558\uace0 \ubcc0\uacbd\ud560 \uc218 \uc788\ub294 \uc6b4\uc601 \uccb4\uc81c(\ub610\ub294 \ucee4\ub110) \uc800\uc7a5\uc18c\uc758 \uc9c0\uc815\ub41c \uc704\uce58\uc5d0 \uc788\ub294 \uac12\uc785\ub2c8\ub2e4. \ubc1c\uacac\ub41c \uac12\uc5d0 \ub530\ub77c \ud504\ub85c\uc138\uc2a4\/\uc2a4\ub808\ub4dc\ub294 \ub9ac\uc18c\uc2a4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uac70\ub098 \ub9ac\uc18c\uc2a4\uac00 \uc774\ubbf8 \uc0ac\uc6a9 \uc911\uc784\uc744 \ud655\uc778\ud558\uace0 \ub2e4\uc2dc \uc2dc\ub3c4\ud558\uae30 \uc804\uc5d0 \uc77c\uc815 \uae30\uac04 \ub3d9\uc548 \uae30\ub2e4\ub824\uc57c \ud569\ub2c8\ub2e4. \uc138\ub9c8\ud3ec\uc5b4\ub294 \uc774\uc9c4\uc218(0 \ub610\ub294 1)\uc774\uac70\ub098 \ucd94\uac00 \uac12\uc744 \uac00\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uc138\ub9c8\ud3ec\uc5b4\ub97c \uc0ac\uc6a9\ud558\ub294 \ud504\ub85c\uc138\uc2a4\/\uc2a4\ub808\ub4dc\ub294 \uac12\uc744 \ud655\uc778\ud55c \ub2e4\uc74c \ub9ac\uc18c\uc2a4\ub97c \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0 \ud6c4\uc18d \uc138\ub9c8\ud3ec\uc5b4 \uc0ac\uc6a9\uc790\uac00 \uae30\ub2e4\ub824\uc57c \ud568\uc744 \uc54c \uc218 \uc788\ub3c4\ub85d \uc774\ub97c \ubc18\uc601\ud558\ub3c4\ub85d \uac12\uc744 \ubcc0\uacbd\ud569\ub2c8\ub2e4.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Lock<\/strong>&nbsp;\ud074\ub798\uc2a4\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uba54\uc18c\ub4dc\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>acquire([blocking]) :<\/strong>\u00a0\uc7a0\uae08\uc744 \ud68d\ub4dd\ud569\ub2c8\ub2e4. \uc7a0\uae08\uc740 \ucc28\ub2e8 \ub610\ub294 \ube44\ucc28\ub2e8\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4.\n<ul class=\"wp-block-list\">\n<li>\ucc28\ub2e8 \uc778\uc218\ub97c\u00a0<strong>True<\/strong>\u00a0(\uae30\ubcf8\uac12)\ub85c \uc124\uc815\ud558\uc5ec \ud638\ucd9c\ud558\uba74 \uc7a0\uae08\uc774 \ud574\uc81c\ub420 \ub54c\uae4c\uc9c0 \uc2a4\ub808\ub4dc \uc2e4\ud589\uc774 \ucc28\ub2e8\ub41c \ub2e4\uc74c \uc7a0\uae08\uc774 \uc7a0\uae40\uc73c\ub85c \uc124\uc815\ub418\uace0\u00a0<strong>True \ub97c<\/strong>\u00a0\ubc18\ud658\ud569\ub2c8\ub2e4 .<\/li>\n\n\n\n<li>\ucc28\ub2e8 \uc778\uc218\ub97c\u00a0<strong>False<\/strong>\u00a0\ub85c \uc124\uc815\ud558\uc5ec \ud638\ucd9c\ud558\uba74 \uc2a4\ub808\ub4dc \uc2e4\ud589\uc774 \ucc28\ub2e8\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc7a0\uae08\uc774 \ud574\uc81c\ub41c \uacbd\uc6b0 \uc7a0\uae08\uc73c\ub85c \uc124\uc815\ud558\uace0\u00a0<strong>True\ub97c \ubc18\ud658\ud558\uace0, \uadf8\ub807\uc9c0 \uc54a\uc73c\uba74 \uc989\uc2dc\u00a0<\/strong><strong>False\ub97c<\/strong>\u00a0\ubc18\ud658\ud569\ub2c8\ub2e4\u00a0.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>release() :<\/strong>\u00a0\uc7a0\uae08\uc744 \ud574\uc81c\ud569\ub2c8\ub2e4.\n<ul class=\"wp-block-list\">\n<li>\uc790\ubb3c\uc1e0\uac00 \uc7a0\uae30\uba74 \uc7a0\uae08 \ud574\uc81c \uc0c1\ud0dc\ub85c \uc7ac\uc124\uc815\ud558\uace0 \ub3cc\uc544\uc624\uc138\uc694. \uc7a0\uae08\uc774 \ud574\uc81c\ub420 \ub54c\uae4c\uc9c0 \ub300\uae30\ud558\ub294 \ub2e4\ub978 \uc2a4\ub808\ub4dc\uac00 \ucc28\ub2e8\ub41c \uacbd\uc6b0 \uadf8 \uc911 \uc815\ud655\ud788 \ud558\ub098\ub9cc \uc9c4\ud589\ud558\ub3c4\ub85d \ud5c8\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc7a0\uae08\uc774 \uc774\ubbf8 \uc7a0\uae08 \ud574\uc81c\ub41c \uacbd\uc6b0\u00a0<strong>ThreadError<\/strong>\u00a0\uac00 \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uc544\ub798 \uc8fc\uc5b4\uc9c4 \uc608\ub97c \uace0\ub824\ud558\uc2ed\uc2dc\uc624.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>import threading# global variable xx = 0def increment():&nbsp;&nbsp;&nbsp;&nbsp;&#8220;&#8221;&#8221;&nbsp;&nbsp;&nbsp;&nbsp;function to increment global variable x&nbsp;&nbsp;&nbsp;&nbsp;&#8220;&#8221;&#8221;&nbsp;&nbsp;&nbsp;&nbsp;global x&nbsp;&nbsp;&nbsp;&nbsp;x += 1def thread_task(lock):&nbsp;&nbsp;&nbsp;&nbsp;&#8220;&#8221;&#8221;&nbsp;&nbsp;&nbsp;&nbsp;task for thread&nbsp;&nbsp;&nbsp;&nbsp;calls increment function 100000 times.&nbsp;&nbsp;&nbsp;&nbsp;&#8220;&#8221;&#8221;&nbsp;&nbsp;&nbsp;&nbsp;for _ in range(100000):&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lock.acquire()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;increment()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lock.release()def main_task():&nbsp;&nbsp;&nbsp;&nbsp;global x&nbsp;&nbsp;&nbsp;&nbsp;# setting global variable x as 0&nbsp;&nbsp;&nbsp;&nbsp;x = 0&nbsp;&nbsp;&nbsp;&nbsp;# creating a lock&nbsp;&nbsp;&nbsp;&nbsp;lock = threading.Lock()&nbsp;&nbsp;&nbsp;&nbsp;# creating threads&nbsp;&nbsp;&nbsp;&nbsp;t1 = threading.Thread(target=thread_task, args=(lock,))&nbsp;&nbsp;&nbsp;&nbsp;t2 = threading.Thread(target=thread_task, args=(lock,))&nbsp;&nbsp;&nbsp;&nbsp;# start threads&nbsp;&nbsp;&nbsp;&nbsp;t1.start()&nbsp;&nbsp;&nbsp;&nbsp;t2.start()&nbsp;&nbsp;&nbsp;&nbsp;# wait until threads finish their job&nbsp;&nbsp;&nbsp;&nbsp;t1.join()&nbsp;&nbsp;&nbsp;&nbsp;t2.join()if __name__ == &#8220;__main__&#8221;:&nbsp;&nbsp;&nbsp;&nbsp;for i in range(10):&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;main_task()&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print(&#8220;Iteration {0}: x = {1}&#8221;.format(i,x))<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\uc0b0\ucd9c:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Iteration 0: x = 200000\nIteration 1: x = 200000\nIteration 2: x = 200000\nIteration 3: x = 200000\nIteration 4: x = 200000\nIteration 5: x = 200000\nIteration 6: x = 200000\nIteration 7: x = 200000\nIteration 8: x = 200000\nIteration 9: x = 200000<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\uc704\uc758 \ucf54\ub4dc\ub97c \ub2e8\uacc4\ubcc4\ub85c \uc774\ud574\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uba3c\uc800 \ub2e4\uc74c\uc744 \uc0ac\uc6a9\ud558\uc5ec\u00a0<strong>Lock<\/strong>\u00a0\uac1d\uccb4\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4.<code> lock = threading.Lock()<\/code><\/li>\n\n\n\n<li>\uadf8\ub7f0 \ub2e4\uc74c\u00a0<strong>\uc7a0\uae08\uc774<\/strong>\u00a0\ub300\uc0c1 \ud568\uc218 \uc778\uc218\ub85c \uc804\ub2ec\ub429\ub2c8\ub2e4.<code> t1 = threading.Thread(target=thread_task, args=(lock,)) t2 = threading.Thread(target=thread_task, args=(lock,))<\/code><\/li>\n\n\n\n<li>\ub300\uc0c1 \ud568\uc218\uc758 \uc911\uc694\ud55c \uc139\uc158\uc5d0\uc11c\ub294\u00a0<strong>lock.acquire()<\/strong>\u00a0\uba54\uc11c\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc7a0\uae08\uc744 \uc801\uc6a9\ud569\ub2c8\ub2e4. \uc7a0\uae08\uc774 \ud68d\ub4dd\ub418\uba74\u00a0<strong>lock.release() \uba54\uc11c\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc7a0\uae08\uc774 \ud574\uc81c\ub420 \ub54c\uae4c\uc9c0 \ub2e4\ub978 \uc2a4\ub808\ub4dc\ub294 \uc784\uacc4 \uc139\uc158(\uc5ec\uae30\uc11c\ub294\u00a0<\/strong><strong>\uc99d\ubd84<\/strong>\u00a0\ud568\uc218) \uc5d0 \uc561\uc138\uc2a4\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4\u00a0.<code> lock.acquire() increment() lock.release()<\/code>\uacb0\uacfc\uc5d0\uc11c \ubcfc \uc218 \uc788\ub4ef\uc774\u00a0<strong>x<\/strong>\u00a0\uc758 \ucd5c\uc885 \uac12\uc740 \ub9e4\ubc88 200000\uc73c\ub85c \ub098\uc635\ub2c8\ub2e4(\ucd5c\uc885 \uc608\uc0c1 \uacb0\uacfc).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2e4\uc74c\uc740 \uc704 \ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c \uc7a0\uae08 \uad6c\ud604\uc744 \uc124\uba85\ud558\ub294 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"830\" height=\"442\" src=\"http:\/\/thelivesmart.com\/w\/wp-content\/uploads\/2024\/10\/img_2-1.png\" alt=\"\" class=\"wp-image-24074\" srcset=\"https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/10\/img_2-1.png 830w, https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/10\/img_2-1-300x160.png 300w, https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/10\/img_2-1-768x409.png 768w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\uc774\ub85c\uc368 Python\uc758 \uba40\ud2f0\uc2a4\ub808\ub529<\/strong>&nbsp;\uc5d0 \ub300\ud55c \ud29c\ud1a0\ub9ac\uc5bc \uc2dc\ub9ac\uc988\uac00 \ub05d\ub0ac\uc2b5\ub2c8\ub2e4&nbsp;.&nbsp;<br>\ub9c8\uc9c0\ub9c9\uc73c\ub85c \uba40\ud2f0\uc2a4\ub808\ub529\uc758 \uba87 \uac00\uc9c0 \uc7a5\uc810\uacfc \ub2e8\uc810\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"Advantages:\"><strong>\uc7a5\uc810:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc0ac\uc6a9\uc790\ub97c \ucc28\ub2e8\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc2a4\ub808\ub4dc\ub294 \uc11c\ub85c \ub3c5\ub9bd\uc801\uc774\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc2a4\ub808\ub4dc\uac00 \uc791\uc5c5\uc744 \ubcd1\ub82c\ub85c \uc2e4\ud589\ud558\ubbc0\ub85c \uc2dc\uc2a4\ud15c \ub9ac\uc18c\uc2a4\ub97c \ub354 \ud6a8\uc728\uc801\uc73c\ub85c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ub2e4\uc911 \ud504\ub85c\uc138\uc11c \uc2dc\uc2a4\ud15c\uc758 \uc131\ub2a5\uc774 \ud5a5\uc0c1\ub418\uc5c8\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ub2e4\uc911 \uc2a4\ub808\ub4dc \uc11c\ubc84 \ubc0f \ub300\ud654\ud615 GUI\ub294 \ub2e4\uc911 \uc2a4\ub808\ub4dc\ub97c \ub3c5\uc810\uc801\uc73c\ub85c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"Disadvantages:\"><strong>\ub2e8\uc810:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc2a4\ub808\ub4dc \uc218\uac00 \uc99d\uac00\ud558\uba74 \ubcf5\uc7a1\uc131\ub3c4 \uc99d\uac00\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uacf5\uc720 \ub9ac\uc18c\uc2a4(\uac1d\uccb4, \ub370\uc774\ud130)\uc758 \ub3d9\uae30\ud654\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ub514\ubc84\uae45\uc774 \uc5b4\ub835\uace0 \uacb0\uacfc\ub97c \uc608\uce21\ud560 \uc218 \uc5c6\ub294 \uacbd\uc6b0\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uae30\uc544 \uc0c1\ud0dc\ub85c \uc774\uc5b4\uc9c0\ub294 \uc7a0\uc7ac\uc801\uc778 \uad50\ucc29 \uc0c1\ud0dc. \uc989 \uc77c\ubd80 \uc2a4\ub808\ub4dc\uac00 \uc798\ubabb\ub41c \ub514\uc790\uc778\uc73c\ub85c \uc81c\uacf5\ub418\uc9c0 \uc54a\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc2a4\ub808\ub4dc \uad6c\uc131 \ubc0f \ub3d9\uae30\ud654\ub294 CPU\/\uba54\ubaa8\ub9ac\ub97c \ub9ce\uc774 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\uc774 \uae30\uc0ac\uc5d0\uc11c\ub294 Python \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\uc5d0\uc11c&nbsp;\uba40\ud2f0\uc2a4\ub808\ub529&nbsp;\uc758 \uacbd\uc6b0 \uc2a4\ub808\ub4dc \ub3d9\uae30\ud654 \uac1c\ub150\uc5d0 \ub300\ud574 \uc124\uba85\ud569\ub2c8\ub2e4 . \uc2a4\ub808\ub4dc \uac04 \ub3d9\uae30\ud654 \uc2a4\ub808\ub4dc \ub3d9\uae30\ud654\ub294 \ub450 \uac1c \uc774\uc0c1\uc758 \ub3d9\uc2dc \uc2a4\ub808\ub4dc\uac00 \uc784\uacc4 \uc139\uc158&nbsp;\uc73c\ub85c \uc54c\ub824\uc9c4 \uc77c\ubd80 \ud2b9\uc815 \ud504\ub85c\uadf8\ub7a8 \uc138\uadf8\uba3c\ud2b8\ub97c \ub3d9\uc2dc\uc5d0 \uc2e4\ud589\ud558\uc9c0 \uc54a\ub3c4\ub85d \ud558\ub294 \uba54\ucee4\ub2c8\uc998\uc73c\ub85c \uc815\uc758\ub429\ub2c8\ub2e4&nbsp;. \uc911\uc694 \uc139\uc158\uc740 \uacf5\uc720 \ub9ac\uc18c\uc2a4\uc5d0 \uc561\uc138\uc2a4\ud558\ub294 \ud504\ub85c\uadf8\ub7a8 \ubd80\ubd84\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \uc544\ub798 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc5d0\uc11c\ub294 3\uac1c\uc758 \uc2a4\ub808\ub4dc\uac00 \ub3d9\uc2dc\uc5d0 \uacf5\uc720 \ub9ac\uc18c\uc2a4 \ub610\ub294 \uc911\uc694 \uc139\uc158\uc5d0 &hellip; <a href=\"https:\/\/atmokpo.com\/w\/24071\/\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;Python\uc758 \uba40\ud2f0\uc2a4\ub808\ub529 2(\ub3d9\uae30\ud654)&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[11],"tags":[],"class_list":["post-24071","post","type-post","status-publish","format-standard","hentry","category-11"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python\uc758 \uba40\ud2f0\uc2a4\ub808\ub529 2(\ub3d9\uae30\ud654) - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atmokpo.com\/w\/24071\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python\uc758 \uba40\ud2f0\uc2a4\ub808\ub529 2(\ub3d9\uae30\ud654) - \ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"og:description\" content=\"\uc774 \uae30\uc0ac\uc5d0\uc11c\ub294 Python \ud504\ub85c\uadf8\ub798\ubc0d \uc5b8\uc5b4\uc5d0\uc11c&nbsp;\uba40\ud2f0\uc2a4\ub808\ub529&nbsp;\uc758 \uacbd\uc6b0 \uc2a4\ub808\ub4dc \ub3d9\uae30\ud654 \uac1c\ub150\uc5d0 \ub300\ud574 \uc124\uba85\ud569\ub2c8\ub2e4 . \uc2a4\ub808\ub4dc \uac04 \ub3d9\uae30\ud654 \uc2a4\ub808\ub4dc \ub3d9\uae30\ud654\ub294 \ub450 \uac1c \uc774\uc0c1\uc758 \ub3d9\uc2dc \uc2a4\ub808\ub4dc\uac00 \uc784\uacc4 \uc139\uc158&nbsp;\uc73c\ub85c \uc54c\ub824\uc9c4 \uc77c\ubd80 \ud2b9\uc815 \ud504\ub85c\uadf8\ub7a8 \uc138\uadf8\uba3c\ud2b8\ub97c \ub3d9\uc2dc\uc5d0 \uc2e4\ud589\ud558\uc9c0 \uc54a\ub3c4\ub85d \ud558\ub294 \uba54\ucee4\ub2c8\uc998\uc73c\ub85c \uc815\uc758\ub429\ub2c8\ub2e4&nbsp;. \uc911\uc694 \uc139\uc158\uc740 \uacf5\uc720 \ub9ac\uc18c\uc2a4\uc5d0 \uc561\uc138\uc2a4\ud558\ub294 \ud504\ub85c\uadf8\ub7a8 \ubd80\ubd84\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \uc544\ub798 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc5d0\uc11c\ub294 3\uac1c\uc758 \uc2a4\ub808\ub4dc\uac00 \ub3d9\uc2dc\uc5d0 \uacf5\uc720 \ub9ac\uc18c\uc2a4 \ub610\ub294 \uc911\uc694 \uc139\uc158\uc5d0 &hellip; \ub354 \ubcf4\uae30 &quot;Python\uc758 \uba40\ud2f0\uc2a4\ub808\ub529 2(\ub3d9\uae30\ud654)&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/atmokpo.com\/w\/24071\/\" \/>\n<meta property=\"og:site_name\" content=\"\ub77c\uc774\ube0c\uc2a4\ub9c8\ud2b8\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-22T03:46:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-26T08:04:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/atmokpo.com\/w\/wp-content\/uploads\/2024\/10\/img-2.png\" \/>\n\t<meta property=\"og:image:width\" content=\"522\" \/>\n\t<meta property=\"og:image:height\" content=\"232\" \/>\n\t<meta property=\"og:image:type\" 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