查找字符串中第一个数字的索引

Question

我有一个像

"xdtwkeltjwlkejt7wthwk89lk"

如何获取字符串中第一位的索引？

Answer 1

用途re.search()：

>>> import re
>>> s1 = "thishasadigit4here"
>>> m = re.search(r"\d", s1)
>>> if m is not None:
...     print("Digit found at position", m.start())
... else:
...     print("No digit in that string")
... 
Digit found at position 13