Is there a way to detect different information from closed brackets? Example:

Text = Hello World, this is my name (Greta). For this example (i need an example in a bracket)

In my case I would like to only detect the brackets with more than one word inside using a regex.

Output: I need an example in a bracket

CodePudding user response：

\((\w \s \w [^)]*)\) is probably close to what you want.

• \( is an open-paren literal and \) is a close-paren literal
• (...) creates a capturing group, so we can get only the inside of the parens
• \w matches alphanumeric characters
• says that we are looking for 1 or more of the specified character class
• \s matches whitespace characters.
• [^)] is the character group of anything other than a close-paren )
• [^)]* selects any number of non-) characters (including 0)
• \) matches the close paren.
• Taken together, we check for a (, then a alphanumeric word, then one or more spaces, then another alphanumeric word, then take as much as we need of things that aren't ), and then a close paren.

Note that this fails in cases like Hello (Alice and (hello) Bob), where it will capture Alice and (hello. (This is a fundamental limitation to regexes, you will have to use another method if you need to parse nested parentheses)

CodePudding user response：

You could use:

\(\s*[A-Za-z] \s[A-Za-z\s] \))

Which will look for:

• \( : open parenthesis
• \s* : zero or more spaces
• [A-Za-z] : followed by one or more letters
• \s : followed by a space
• [A-Za-z\s] : followed by one or more letters and/or spaces
• \) : close parenthesis

Code:

import re

text='Hello World, this is my name (Greta). For this example (i need an example in a bracket)'

m = re.findall(r'(\(\s*[A-Za-z] \s[A-Za-z\s] \))', text)

for match in m:
    print(match[1:-1])

Output:

i need an example in a bracket

CodePudding user response：

You have to analuze what do you really need from the text and start from the basic. I did it in this way

/\([a-zA-Z ]*\)

I would also recommend you this tool to try it in case you need