CODEWITHSUNDEEP
pythonregex
reddy
reddy

Reputation: 1831

Regular expression to match all Python definitions in a module

I have a Python module and I want to catch all it's public methods, no private or child methods, for example,

def Func1(c, v1=None, v2=None, v3=None):
    def childFunc(c): # I don't want to catch this

This is my regular expression:

/def ([a-zA-Z]\w+\([\w, =]+\)):/

However this also matched the child methods as well and it doesn't work on definitions that spanned multiple lines:

def Func2(c, v1=None, v2=None, v3=None, \
v4=None, v5=None):

Upvotes: 1

Views: 138

Answers (3)

user9413641
user9413641

Reputation:

This does not only catch the function definition (like the other answers) but the whole function.

^def \w+\([^\f\v\r\n]*?\)\:[\s\S]+?^(?![ \t#])

explanation;

^def matches the beginning of a line followed by a "def" and a space " ".

\w+ matches the name of the function.

\([^\f\v\r\n]*?\)\: matches a parenthesis containing anything that is not the beginning of a new line (lazy), followed by ":".

[\s\S]+? matches absolutely anything (lazy).

^ matches the beginning of a line.

(?![ \t#]) requires that the next thing is not a space, tab or beginning of a comment.

Upvotes: 0

Ryszard Czech
Ryszard Czech

Reputation: 18641

Use

(?m)^def ([a-zA-Z]\w*)\(([^()]*)\):

See proof

NODE EXPLANATION
^ the beginning of the string
def<SPACE> 'def '
( group and capture to \1:
[a-zA-Z] any character of: 'a' to 'z', 'A' to 'Z'
\w* word characters (a-z, A-Z, 0-9, _) (0 or more times (matching the most amount possible))
) end of \1
\( '('
( group and capture to \2:
[^()]* any character except: '(', ')' (0 or more times (matching the most amount possible))
) end of \2
\) ')'
: ':'

Upvotes: 2

jdaz
jdaz

Reputation: 6063

Trying to keep out child functions in any other language that uses opening and closing braces would quickly become a nightmare just using regex. But in Python it actually seems doable. Try this:

^(?:\t| {4})def ([a-zA-Z]\w*\([^:]*\)):

The 4 represents how many spaces you are using for one indented line, so change it as needed.

Demo

Upvotes: 0

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