I have a multiline text string, that looks like:
AAAA BBBBBB
BBBB VVVV XXXX
CCCCCCCC XXXX
I'd like to come up with a small function that removes an entire line if it contains a word/phrase , so that for above if I lets say sent in 'VVV' as a paremeter the output would be:
AAAA BBBBBB
CCCCCCCC XXXX
There are many examples on stackoverflow, eg Remove lines that contain certain string, which show how to do this for a file, but I'm not sure how without opening a file.
you can use re.sub:
>>> import re
>>> my_string
'AAAA BBBBBB\nBBBB VVVV XXXX\n\nCCCCCCCC XXXX'
>>> re.sub(".*VVV.*\n?","",my_string)
'AAAA BBBBBB\n\nCCCCCCCC XXXX'
you can define a function and can do for any substring:
>>> def remove(rem,my_string):
... return re.sub(".*"+rem+".*\n?","",my_string)
...
>>> remove("VVV",my_string)
'AAAA BBBBBB\n\nCCCCCCCC XXXX'
>>> remove("XXX",my_string)
'AAAA BBBBBB\n\n'
>>> remove("BBB",my_string)
'\nCCCCCCCC XXXX'
>>> remove("CCCC",my_string)
'AAAA BBBBBB\nBBBB VVVV XXXX\n\n'
>>> text = '''AAAA BBBBBB
BBBB VVVV XXXX
CCCCCCCC XXXX'''
>>> text = '\n'.join(line for line in text.split('\n') if 'VVV' not in line)
>>> print text
AAAA BBBBBB
CCCCCCCC XXXX
inp = "AAAA BBBBBB\nBBBB VVVV XXXX\n\nCCCCCCCC XXXX"
ans = ""
pattern = "VVVV"
for line in inp.split("\n"):
if line.find(pattern)<0:
ans=ans + line+"\n"
print ans
!, you can use not instead