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Python Regular Expression: double-quoted string literals that allows for escaped double quotes
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# Tricky REs with ^ and \ | |
# Assign to regexp a regular expression for double-quoted string literals that | |
# allows for escaped double quotes. | |
# Hint: Escape " and \ | |
# Hint: (?: (?: ) ) | |
import re | |
regexp = r'"(?:[^\\]|(?:\\.))*"' | |
# regexp matches: | |
print re.findall(regexp,'"I say, \\"hello.\\""') == ['"I say, \\"hello.\\""'] | |
#>>> True | |
# regexp does not match: | |
print re.findall(regexp,'"\\"') != ['"\\"'] | |
#>>> True |
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