Regex findall

Python re compile

import re
#	Compile a regular expression pattern into a regular expression object, which can be used for matching using its match(), search() and other methods, described below.

prog = re.compile(pattern)
result = prog.match(string)

#	is equivalent to

result = re.match(pattern, string)

Source: docs.python.org

Python .findall

  ## Search for pattern 'bb' in string 'aabbcc'.
  ## All of the pattern must match, but it may appear anywhere.
  ## On success, match.group() is matched text.
  match = re.search(r'bb', 'aabbcc') # found, match.group() == "bb"
  match = re.search(r'cd', 'aabbcc') # not found, match == None

  ## . = any char but \n
  match = re.search(r'...c', 'aabbcc') # found, match.group() == "abbc"

  ## \d = digit char, \w = word char
  match = re.search(r'\d\d\d', 'p123g') # found, match.group() == "123"
  match = re.search(r'\w\w\w', '@@abcd!!') # found, match.group() == "abc"

Regex findall

import re
# regex for finding mentions in a tweet
regex = r"(?<!RT\s)@\S+"
tweet = '@tony I am so over @got and @sarah is dead to me.'

# mentions = ['@tony', '@got', '@sarah'] 
mentions = re.findall(regex, tweet)

Similar codes

0 vote143 views6 answers
Idl else
Python
0 vote115 views1 answer
Dinoscape für pc
Python
17 votes122 views2 answers
Python list subdirectories
Python
0 vote168 views1 answer
How to create a custom function in python
Python
0 vote133 views2 answers
Adding a new column in pandas dataframe from another dataframe with different index
Python
2 votes131 views1 answer
Tkinter execute function on enter
Python
-1 vote134 views1 answer
Jupyternootebok matplotlib inline
Python
0 vote116 views1 answer
Use get method request html page python
Python
7 votes136 views3 answers
How to get all possible combinations in python
Python
2 votes147 views2 answers
Poetry add specific version
Python