How to use inspect to get the caller's info from callee in Python?

python inspect
prosseek picture prosseek · Sep 14, 2010 · Viewed 36.9k times · Source

I need to get the caller info (what file/what line) from callee. I learned that I can use inpect module for that for purposes, but not exactly how.

How to get those info with inspect? Or is there any other way to get the info?

import inspect

print __file__
c=inspect.currentframe()
print c.f_lineno

def hello():
    print inspect.stack
    ?? what file called me in what line?

hello()

Answer

unutbu picture unutbu · Sep 14, 2010

The caller's frame is one frame higher than the current frame. You can use inspect.currentframe().f_back to find the caller's frame. Then use inspect.getframeinfo to get the caller's filename and line number.

import inspect

def hello():
    previous_frame = inspect.currentframe().f_back
    (filename, line_number, 
     function_name, lines, index) = inspect.getframeinfo(previous_frame)
    return (filename, line_number, function_name, lines, index)

print(hello())

# ('/home/unutbu/pybin/test.py', 10, '<module>', ['hello()\n'], 0)

Related questions

How to list all functions in a Python module?

I have a python module installed on my system and I'd like to be able to see what functions/classes/methods are available in it. I want to call the doc function on each one. In ruby I can do …

Read More
How can I get a list of all classes within current module in Python?

I've seen plenty of examples of people extracting all of the classes from a module, usually something like: # foo.py class Foo: pass # test.py import inspect import foo for name, obj in inspect.getmembers(foo): if inspect.isclass(obj): …

Read More
Using a dictionary to select function to execute

I am trying to use functional programming to create a dictionary containing a key and a function to execute: myDict={} myItems=("P1","P2","P3",...."Pn") def myMain(key): def ExecP1(): pass def ExecP2(): pass def ExecP3(): pass ... def ExecPn(): pass …

Read More