为什么在这种python2情况下re.sub不起作用？

Question

import re
text = "PO 00000  Frm 00001  Fmt 0624  Sfmt 0634  E:\CR\FM\A07JN6.000  S07JNPT1"
text = re.sub(text, " ", text)

print(text)

I'm on Python 2.7.15. The output is PO 00000 Frm 00001 Fmt 0624 Sfmt 0634 E:\\CR\\FM\\A07JN6.000 S07JNPT1 . Why doesn't the output become " " ?

Answer 1

Looks like you need re.escape

Ex:

import re
text = "PO 00000  Frm 00001  Fmt 0624  Sfmt 0634  E:\CR\FM\A07JN6.000  S07JNPT1"
text = re.sub(re.escape(text), " ", text)

print(text)

Note: You can also use str.replace for this case.