#Python string contains how to#

Note that if group did not contribute to the match, this is (-1, -1).

“For a match m, return the 2-tuple (m.start(group), m.end(group)). If you just want to check whether a string contains a substring.

#Python string contains how to#

We can get the start and end indices in tuple format using match.span(). In this tutorial, youll learn how to use the Python string find() method effectively.Return -1 if group exists but did not contribute to the match.” - Python’s documentation “Return the indices of the start and end of the substring matched by group group defaults to zero (meaning the whole matched substring). This will return True is str1 contains str2, and False otherwise. ret str.contains (str1, str2) This is similar to our previous usage, but we invoke this as a Class method on the String class. We can also use this as a class method on the str class, and use two arguments instead of one. We can find the start and end indices from the match object using match.start() and match.end(). Using Python String contains () as a Class method.The return type matches the object that contains the starting and ending index of that pattern (substring).

re.search (pattern, string): We have to mention the pattern to be searched in the string.We should note that this function is case-sensitive. Return None if no position in the string matches the pattern note that this is different from finding a zero-length match at some point in the string.” - Python’s official documentation So, in general, the working of this function is it will check if the string object str in the syntax contains a string (substring) specified or passed as an argument to the contains() function. “Scan through string looking for the first location where the regular expression pattern produces a match, and return a corresponding match object.