Using regular expressions - documentation for further reference
import re
text = 'gfgfdAAA1234ZZZuijjk'
m = re.search('AAA(.+?)ZZZ', text)
if m:
found = m.group(1)
# found: 1234
or:
import re
text = 'gfgfdAAA1234ZZZuijjk'
try:
found = re.search('AAA(.+?)ZZZ', text).group(1)
except AttributeError:
# AAA, ZZZ not found in the original string
found = '' # apply your error handling
# found: 1234
Note.nkmk.me
note.nkmk.me › home › python
Extract a Substring from a String in Python (Position, Regex) | note.nkmk.me
April 29, 2025 - Since backslashes \ are used in ... returns a match object. You can retrieve the matched substring using the group() method of the match object....
GeeksforGeeks
geeksforgeeks.org › python › python-extract-substring-using-regex
Python Extract Substring Using Regex - GeeksforGeeks
July 23, 2025 - Below, are the methods of Python Extract Substring Using Regex in Python. ... In this example, below Python code utilizes `re.search()` to find the substring "Python" in the string "I love Python." If a match is found, it prints the matched substring using `match.group()`, demonstrating a basic example of substring extraction with regular expressions.
Python: best way to find and extract substring from a string?
Your post is kind of messed up because you didn't format your example properly as a code block. But based on the way your Markdown formatting came out, I'm guessing that the three strings you're looking for are on lines by themselves that start with a # symbol. In that case you could just do something along the lines of: lines = string.split('\n') heading_lines = [l for l in lines if l.startswith('#')] title, description, results = [l.strip('#').strip() for l in heading_lines[:3]] More on reddit.com
10
6
October 9, 2024The simplest way to extract a substring from a string
I personally would either use string slicing or a regex. For example, the slicing version would probably look something like substring = string[string.find("(") + 1:string.find(")")] and the regex you would use would probably look something like this: re.search(r'\((.*?)\)', string).group(1) More on reddit.com
5
1
May 27, 2021regex to extract a substring from a string in python - Stack Overflow
How do we get the following substring from a string using re in python. string1 = "fgdshdfgsLooking: 3j #123" substring = "Looking: 3j #123" string2 = "Looking: avb456j # More on stackoverflow.com
python - Using regex to extract substrings - Stack Overflow
I have a string: s = r'"url" : "a", "meta": "b", "url" : "c"' What I want is to capture the substring url: ... up to the ,, so the expec... More on stackoverflow.com
Videos
05:28
How To Extract CHARACTERS In A String - Python Beginners Tutorial ...
01:56
Python Regex: How To Replace All Substrings In a String - YouTube
10:12
Python Regular Expression (RegEx). Extract Dates from Strings in ...
08:29
Scala Regex: Extracting Substring - YouTube
- YouTube
Top answer 1 of 16
886
Using regular expressions - documentation for further reference
import re
text = 'gfgfdAAA1234ZZZuijjk'
m = re.search('AAA(.+?)ZZZ', text)
if m:
found = m.group(1)
# found: 1234
or:
import re
text = 'gfgfdAAA1234ZZZuijjk'
try:
found = re.search('AAA(.+?)ZZZ', text).group(1)
except AttributeError:
# AAA, ZZZ not found in the original string
found = '' # apply your error handling
# found: 1234
2 of 16
166
>>> s = 'gfgfdAAA1234ZZZuijjk'
>>> start = s.find('AAA') + 3
>>> end = s.find('ZZZ', start)
>>> s[start:end]
'1234'
Then you can use regexps with the re module as well, if you want, but that's not necessary in your case.
EyeHunts
tutorial.eyehunts.com › home › python regex extract substring | example code
Python regex extract substring | Example code - EyeHunts
August 24, 2021 - Call re.findall(r”pattern (.*)”, string) with pattern as the exact sequence to match within string. import re text = "Chennai is a beautiful city.Chennai is the capital of the state of Tamil Nadu" city = re.findall("Chennai", text) print(city) ...
ReqBin
reqbin.com › code › python › h73zla88 › python-substring-example
How do I get a substring from a string in Python?
December 25, 2022 - Regular expressions are a powerful string manipulation tool in Python that is natively supported in Python. To extract a substring from a string using regular expressions, you must first import the "re" module into your code.
Linux Hint
linuxhint.com › extract-substring-regex-python
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Sentry
sentry.io › sentry answers › python › extract a substring from a string in python
Extract a substring from a string in Python
2 weeks ago - Extract substrings from Python strings using slice notation with [start:end] indexes, or use re.search() with regex patterns for matching specific formats
Top answer 1 of 2
2
Your post is kind of messed up because you didn't format your example properly as a code block. But based on the way your Markdown formatting came out, I'm guessing that the three strings you're looking for are on lines by themselves that start with a # symbol. In that case you could just do something along the lines of: lines = string.split('\n') heading_lines = [l for l in lines if l.startswith('#')] title, description, results = [l.strip('#').strip() for l in heading_lines[:3]]
2 of 2
2
Regex with match groups would be your friend here. Essentially you make the match group a wildcard for the content and the regex will find the pattern and return sny match groups
Reddit
reddit.com › r/learnpython › the simplest way to extract a substring from a string
r/learnpython on Reddit: The simplest way to extract a substring from a string
May 27, 2021 -
Hello,
I'm learning python from scratch, and I am trying to figure out how to "extract" a substring from a string. So, for instance, let's say I want to extract the word within the parenthesis for each of these three strings.
'xx(hi)xx' 'abc(there)xyz' 'xx(c)xx'
I know I could use slicing, but this would involve three operations, I think. I'm wondering if there's a sort of pattern I can leverage. How do you guys approach this kind of problem?
Thank you in advance for your help. It is most appreciated!
Top answer 1 of 3
5
I personally would either use string slicing or a regex. For example, the slicing version would probably look something like substring = string[string.find("(") + 1:string.find(")")] and the regex you would use would probably look something like this: re.search(r'\((.*?)\)', string).group(1)
2 of 3
2
You probably want the package re for using regular expressions. You can use that to search strings for certain patterns and extract the information
YouTube
youtube.com › datadaft
Python Regex: How Find a Substring in a String - YouTube
↓ Code Available Below! ↓ This video shows how to find and extract substrings within python strings using the regular expressions package. Locating and extra...
Published September 30, 2020 Views 451
Top answer 1 of 4
2
Your regex is mostly correct, you just need to remove EOL(End of Line) $ as in some case like string2 the pattern does not end with a EOL, and have some extra string after the pattern ends.
import re
string1 = 'fgdshdfgsLooking: 3j #123'
string2 = 'Looking: avb456j #13fgfddg'
pattern = r'Looking: (.*?#\d+)'
match1 = re.search(pattern, string1)
match2 = re.search(pattern, string2)
print('String1:', string1, '|| Substring1:', match1.group(0))
print('String2:', string2, '|| Substring2:', match2.group(0))
Output:
String1: fgdshdfgsLooking: 3j #123 || Substring1: Looking: 3j #123
String2: Looking: avb456j #13fgfddg || Substring2: Looking: avb456j #13
should work, also I've matched everything before # lazily by using ? to match as few times as possible, expanding as needed, that is to avoid matching everything upto second #, in case there is a second #followed by few digits in the string somewhere further down.
Live Demo
2 of 4
2
You need to remove the $ from the regex:
re.search(r'Looking: (.*#\d+)', string1)
If you also want re to return Looking, you'll have to wrap it in parens:
re.search(r'(Looking: (.*#\d+))', string1)
iO Flood
ioflood.com › blog › python-substring-quick-reference
Python Substring Quick Reference
January 31, 2024 - This code extracts the first five characters from the string, forming the substring ‘Hello’. ... The “2” in the step above means it will increment forward by 2 characters each time it extracts a character — in effect, skipping every other character. Let’s explore a few more examples of substring extraction in different scenarios. string = "Hello, Python!" substring = string[:5] print(substring) # Outputs: Hello
TutorialsPoint
tutorialspoint.com › article › How-to-extract-a-substring-from-inside-a-string-in-Python
How to extract a substring from inside a string in Python?
May 20, 2025 - The re module provides powerful pattern matching capabilities for complex substring extraction using regular expressions. Here we extract a price pattern from a string using re.search() ?
Top answer 1 of 2
3
Your last "," was beeing matched due to a greedy search, (.*?) is non greedy. Also the last comma is optional so that needs to be ignored if not present
import re
s = r'"url":"a","meta":"b","url":"c"'
print(re.findall(r'("url"):"(.*?)",?', s))
2 of 2
1
You must escape the , to avoid including the comma inside the group. Try this:
re.findall(r'(("url" :[^,]*),*)', s)
EyeHunts
tutorial.eyehunts.com › home › python extract substring from string
Python extract substring from string - Tutorial - By EyeHunts
July 28, 2023 - 3. Using Regular Expressions (Regex): Regular expressions provide a powerful way to extract substrings based on more complex patterns. import re # Example string text = "Hello, World!" # Using regex to extract all capitalized words matches = re.findall(r'\b[A-Z][a-z]*\b', text) print(matches) # Output: ['Hello', 'World'] Output: These are some of the methods available in Python to extract substrings from a string.
Delft Stack
delftstack.com › home › howto › python › extract substring from a string in python
How to Extract Substring From a String in Python | Delft Stack
February 2, 2024 - Sometimes, while writing programs, we have to access sub-parts of a string. These sub-parts are more commonly known as substrings. A substring is a subset of a string. In Python, we can easily do this task using string slicing or using regular expression or regex.
Medium
medium.com › quantrium-tech › extracting-words-from-a-string-in-python-using-regex-dac4b385c1b8
Extracting Words from a string in Python using RegEx
October 6, 2020 - This is one of the ways in which you can use the () operator to extract particular patterns that we are interested in, which occur along with some other pattern that we are not interested in capturing, like we want to ignore the '@' symbol in our case. To understand all the fundamental components of regex in Python, the best way to do so is by heading to the official documentation of Python 3.8 RegEx here:
Medium
medium.com › @blogshub4 › extracting-substrings-from-strings-in-python-f714960b8c19
Extracting Substrings from Strings in Python | by Blogshub | Medium
December 24, 2024 - Regular expressions provide a powerful way to extract substrings based on patterns. Python’s built-in re module makes this functionality accessible. How to Use Regex for Substrings: Import the re module: Start by importing the re module in your Python script. Use re.search(): This method searches for a pattern within a string and returns a match object.
Top answer 1 of 3
1
You can use this regex:
\t[ \t]\+{3}\$\+{3}[ \t]+([^+]+)$
Demo
Python:
import re
dialogue = "L1045 +++$+++ u0 +++$+++ m0 +++$+++ BIANCA +++$+++ They do not!"
>>> re.findall(r' \t[ \t]\+{3}\$\+{3}[ \t]+([^+]+)$', dialogue)
[('BIANCA', 'They do not!')]
You can also split and slice:
>>> re.split(r'[ \t]\+{3}\$\+{3}[ \t]', dialogue)[-2:]
['BIANCA', ' They do not!']
But split and slice does not gracefully fail if +++$+++ is not found; the search pattern above does.
2 of 3
1
You can do that without re
data = "L1045 +++$+++ u0 +++$+++ m0 +++$+++ BIANCA +++$+++ They do not!"
parts = data.split('+++$+++')
print(parts[-2].strip())
print(parts[-1].strip())
output
BIANCA
They do not!
Top answer 1 of 11
294
You need to capture from regex. search for the pattern, if found, retrieve the string using group(index). Assuming valid checks are performed:
>>> p = re.compile("name (.*) is valid")
>>> result = p.search(s)
>>> result
<_sre.SRE_Match object at 0x10555e738>
>>> result.group(1) # group(1) will return the 1st capture (stuff within the brackets).
# group(0) will returned the entire matched text.
'my_user_name'
2 of 11
104
You can use matching groups:
p = re.compile('name (.*) is valid')
e.g.
>>> import re
>>> p = re.compile('name (.*) is valid')
>>> s = """
... someline abc
... someother line
... name my_user_name is valid
... some more lines"""
>>> p.findall(s)
['my_user_name']
Here I use re.findall rather than re.search to get all instances of my_user_name. Using re.search, you'd need to get the data from the group on the match object:
>>> p.search(s) #gives a match object or None if no match is found
<_sre.SRE_Match object at 0xf5c60>
>>> p.search(s).group() #entire string that matched
'name my_user_name is valid'
>>> p.search(s).group(1) #first group that match in the string that matched
'my_user_name'
As mentioned in the comments, you might want to make your regex non-greedy:
p = re.compile('name (.*?) is valid')
to only pick up the stuff between 'name ' and the next ' is valid' (rather than allowing your regex to pick up other ' is valid' in your group.