有一个数字字符的列表:
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numbers = [ '1' , '5' , '10' , '8' ] |
想要把每个元素转换为数字:
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numbers = [ 1 , 5 , 10 , 8 ] |
用一个循环来解决:
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new_numbers = []; for n in numbers: new_numbers.append( int (n)); numbers = new_numbers; |
有没有更简单的语句可以做到呢?
1.
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numbers = [ int (x) for x in numbers ] |
2. Python2.x,可以使用map函数
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numbers = map ( int , numbers) |
如果是3.x,map返回的是map对象,当然也可以转换为List:
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numbers = list ( map ( int , numbers)) |
3.还有一种比较复杂点:
for i, v in enumerate(numbers): numbers[i] = int(v)