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Python语法简洁，能够用一行代码实现很多有趣的功能，这次来整理30个常见的Python一行代码集合。 1、转置矩阵 old_list = [[ 1 , 2 , 3 ], [ 3 , 4 , 6 ], [ 5 , 6 , 7 ]] list(list(x) for x in zip(*old_list)) [[1, 3, 5], [2, 4, 6], [3, 6, 7]] 2、二进制转十进制 decimal = int( '1010' , 2 ) print(decimal) #10 10 3、字符串大写转小写 # 方法一 lower() "Hi my name is Allwin" .lower() # 'hi my name is allwin' # 方法二 casefold() "Hi my name is Allwin" .casefold() # 'hi my name is allwin' 'hi my name is allwin' 4、字符串小写转大写 "hi my name is Allwin" .upper() # 'HI MY NAME IS ALLWIN' 'HI MY NAME IS ALLWIN' 5、将字符串转换为字节 "convert string to bytes using encode method" .encode() # b'convert string to bytes using encode method' b'convert string to bytes using encode method' 6、复制文件内容 import shutil; shutil.copyfile( 'source.txt'
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