python - Removing strings from other strings -

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how remove part of string like

blue = 'blue ' yellow = 'yellow' words = blue + yellow if blue in words:     words = words - yellow

that thought like?

edit: know thatit won't work want know work. since cant use '-' in str()

you can use str.replace exchange text empty string:

words = words.replace(yellow,'')

note transform:

"the yellow herring"

into simply:

"the herring"

(the replacement happen anywhere in string). if want remove 'yellow' end of string, use .endswith , slice:

if blue in words , words.endswith(yellow):     words = words[:-len(yellow)]

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