Question

我打开一个文件'testFile'并将其拆分为逗号。到现在为止还挺好。一行中的第二个值是“30” 该行是“这是一个，30，测试” 我可以验证它是否正确分裂，因为我可以打印部件[1]并打印“30”，但为什么当该值为30时，repeats.isdigit（）返回false？

with open('testFile') as fp:
    for line in fp:
        parts = line.split( ',' )

        repeats = parts[1]
        print repeats.isdigit()
        print parts[1]

Answer 1

应用于“30”的

isdigit()将始终返回false，因为“30”之前的空白区域。要解决此问题，请在.strip()

之前使用isdigit()方法

Answer 2

You could use re.split. it can split on mult tokens.
import re
with open('data') as f:
    for line in f:
        # split on white space and commas
        line = re.split(r'[ ,]',line)
        # re.split leaves some empty strings, so remove them
        line = [el for el in line if el]
        print(line)
        print(line[3].isdigit())

['This', 'is', 'a', '30', 'test']

True

isdigit为整数返回false

2 个答案: