来看⼀个⼩例⼦,假设我们有⼀段⽂本以及⼀条能够识别⼤部分电⼦邮件地址的正则表达式: text = """Dave dave@ Steve steve@ Rob rob@ Ryan ryan@yahoo.com """ pattern = r'[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}' # re.IGNORECASE
icontains - contains string value, case insensitive startswith - starts with string value istartswith - starts with string value, case insensitive endswith - ends with string value iendswith - ends with string value, case insensitive regex - matches a regex expression iregex - matches a regex...
”. There.IGNORECASEflag is used to make the search case-insensitive, ensuring that the function matches “python”, “Python”, “PYTHON”, or any other variation of the string.
The lookup() function expects a string with the character’s name and returns the corresponding Unicode character, while the name() function takes a character and maps it to a suitable name alias. Note that while lookup() and \N{} are case-insensitive, name() always returns the character’...
Remember that these methods to check if a string contains a substring are case sensitive. You will need to use either the string lower() or upper() methods on both the string and substring if you want to do a case insensitive search. ...
value >>> some_string ["wtf"]▶ Nan-reflexivity *1.a = float('inf') b = float('nan') c = float('-iNf') # These strings are case-insensitive d = float('nan')Output:>>> a inf >>> b nan >>> c -inf >>> float('some_other_string') ValueError: could not convert string...
Compare two strings A and B, determine whether A contains all of the characters in B. The characters in string A and B are all Upper Case letters. Example For A = "ABCD", B = "ABC", return true. For A = "ABCD" B = "AABC", return false. ...
argv[0] is an empty string; if -c is used, sys.argv[0] contains the string '-c'. Note that options interpreted by the Python interpreter itself are not placed in sys.argv. In interactive mode, the primary prompt is `>>>'; the second prompt (which appears when a command is not ...
self.headers = CaseInsensitiveDict() if headers: for header in headers.items(): # Raise exception on invalid header value. check_header_validity(header) name, value = header self.headers[to_native_string(name)] = value prepare_cookies() ...
importunittestclassTestStringMethods(unittest.TestCase):deftest_upper(self):self.assertEqual('foo'.upper(),'FoO')if__name__=='__main__':unittest.main()""" FailureExpected:'FOO'Actual:'FoO'Traceback(most recent call last):File"assertion_in_python.py",line6,intest_upper ...