CODEWITHSUNDEEP
pythonpython-3.xpath
Andrius
Andrius

Reputation: 21108

Get caller function's absolute path to its file?

If there is method t1 in file a.py and there is a file b.py, which calls method t1 from a.py file. How do I get full/absolute path to b.py file inside t1 method?

With inspect module (just like here: how to get the caller's filename, method name in python), I can get relative path to file, but it seems it does not contain absolute path (or there is some other attribute object, to access to get it?).

As an example:

a.py:

def t1():
    print('callers absolute path')

b.py:

from a import t1
t1()  # should print absolute path for `b.py`

Upvotes: 5

Views: 2911

Answers (5)

ymentha14
ymentha14

Reputation: 499

The trick consists in recovering both the current working directory and the relative path w.r.t that directory to the caller file (here b.py). The join does the rest.

a.py:

    import os
    import sys
    def t1():
        namespace = sys._getframe(1).f_globals
        cwd = os.getcwd()
        rel_path = namespace['__file__']
        abs_path= os.path.join(cwd,rel_path)
        print('callers absolute path!',abs_path)

b.py:

    from a import t1
    t1()  # prints absolute path for `b.py`

The trick does not work for jupyter notebooks unfortunately..

Upvotes: 0

DirtyBit
DirtyBit

Reputation: 16772

Using sys._getframe():

a1.py:

import sys
def t1():
    print(sys._getframe().f_code)

a2.py:

from a1 import t1
t1()  # should print absolute path for `b.py`

Hence:

py -m a2.py

OUTPUT:

<code object t1 at 0x0000029BF394AB70, file "C:\Users\dirtybit\PycharmProjects\a1.py", line 2>

EDIT:

Using inspect:

a1.py:

import inspect
def t1():
    print("Caller: {}".format(inspect.getfile(inspect.currentframe())))

a2.py:

from a1 import t1
t1()  # should print absolute path for `b.py`

OUTPUT:

Caller: C:\Users\dirtybit\PycharmProjects\a1.py

Upvotes: 1

Andrius
Andrius

Reputation: 21108

import os
import inspect


def get_cfp(real: bool = False) -> str:
    """Return caller's current file path.

    Args:
        real: if True, returns full path, otherwise relative path
            (default: {False})
    """
    frame = inspect.stack()[1]
    p = frame[0].f_code.co_filename
    if real:
        return os.path.realpath(p)
    return p

Running from another module:

from module import my_module
p1 = my_module.get_cfp()
p2 = my_module.get_cfp(real=True)
print(p1)
print(p2)

Prints:

test_path/my_module_2.py
/home/user/python-programs/test_path/my_module_2.py

Upvotes: 5

Mikkel Madsen
Mikkel Madsen

Reputation: 1

Using the os module you can do the following:

a.py

import os

def t1(__file__):
    print(os.path.abspath(__file__))

b.py

from a import t1
t1(__file__)  # shoult print absolute path for `b.py`

With this, you could call t1(__file__ and get the absolute path for any file.

Upvotes: 0

Jim Todd
Jim Todd

Reputation: 1588

You can get it with the os module in python. 

>>> import a
>>> os.path.abspath(a.__file__)

Upvotes: 0

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