Python：分割由給定對象類型分隔的字符串

Question

如何分割字符串，其中分隔符是Python數據類型？

例如：

str_to_split = 'a1b2c' 
str_to_split.split(int) 
# ['a','b','c'] 

Answer 1

您可以使用re.split()：

>>> import re 
>>> thingToSplit = 'a1b2c' 
>>> re.split('\d+', thingToSplit) 
['a', 'b', 'c'] 

或者，適用isdigit()檢查：

>>> [item for item in thingToSplit if not item.isdigit()] 
['a', 'b', 'c'] 

Answer 2

您可以使用itertools.groupby，這樣

from itertools import groupby 
print ["".join(g) for k,g in groupby('a1b2c', key=str.isdigit) if not k] 
# ['a', 'b', 'c']