本文實例講述了Python列表list解析操作。分享給大家供大家參考,具體如下:
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#coding=utf8 print ''''' Python在一行中使用一個for循環(huán)將所有值放到一個列表中。 列表解析的語法如下: [expr for iter_var in iterable] [expr for iter_var in iterable if cond_expr] ----------------------------------------------------------------- ''' print "把0到8的數(shù)字依次加上五,并把結(jié)果值放在linList中" intList = [x + 5 for x in range ( 8 )] for ele in intList: print ele, print print "從0到8的數(shù)字中挑出奇數(shù),并把奇數(shù)進行乘方操作,結(jié)果保存在powerLIst" powerList = [x * * 2 for x in range ( 8 ) if x % 2 ] for pl in powerList: print pl, print print "把字符串ewang轉(zhuǎn)換成大寫字母,并把結(jié)果保存在upperList中" upperList = [char.upper() for char in "ewang" ] for up in upperList: print up, print print ''''' 把字符串EwAaNg中的大寫字母轉(zhuǎn)換成小寫,并記錄相應(yīng)的索引的值。 把需要轉(zhuǎn)換的字母和索引值保存在matrixList ''' str = 'EwAaNg' matrixList = [(char.lower(),index) for char in str if char.isupper() for index in range ( len ( str )) if str [index].isupper() and str [index] = = char] for mat in matrixList: print mat, print |
運行結(jié)果:
希望本文所述對大家Python程序設(shè)計有所幫助。