Prerequisite: Regex in Python
Use of re.search() and re.match() –
re.search() and re.match() both are functions of re module in python. These functions are very efficient and fast for searching in strings. The function searches for some substring in a string and returns a match object if found, else it returns none.
re.search() vs re.match() –
There is a difference between the use of both functions. Both return the first match of a substring found in the string, but re.match() searches only from the beginning of the string and return match object if found. But if a match of substring is found somewhere in the middle of the string, it returns none.
While re.search() searches for the whole string even if the string contains multi-lines and tries to find a match of the substring in all the lines of string.
<_sre.SRE_Match object; span=(69, 75), match='string'> None
- re.search() is returning match object and implies that first match found at index 69.
- re.match() is returning none because match exists in the second line of the string and re.match() only works if the match is found at the beginning of the string.
- re.IGNORECASE is used to ignore the case sensitivity in the strings.
- Both re.search() and re.match() returns only the first occurrence of a substring in the string and ignore others.
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