如何使用re.sub

Question

I want to modify the string test, to only have "TEXT" left. Therefor everything after "TEXT" is deleted. I figured that out. But how do I use re.sub to cut everything before "TEXT"? I only want to use " 265" and "159 " as criteria to determine when to delete.

test = "314 159 TEXT 265 357" 
test = re.sub(r' 265.*$', '', test) 
print(test)

The Output should be "TEXT"

Answer 1

Use a similar pattern as you did for subbing the end, and string them together.:

test = re.sub(r'.* 159 ', '', re.sub(r' 265.*$', '', test))

Alternatively, you could do it with a single pattern and re.findall :

test = re.findall(r'^.*159 ([A-Z]+) 265.*$', test)