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Cannot access imported submodules in sympy.core #12115

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gerritholl opened this issue Jan 31, 2017 · 3 comments
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Cannot access imported submodules in sympy.core #12115

gerritholl opened this issue Jan 31, 2017 · 3 comments
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@gerritholl
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When importing a submodule from sympy.core using import sympy.core.module, any attempt to access the imported module results in AttributeError, as shown below. Using from sympy.core import module does work:

In [482]: import sympy.core.function

In [483]: sympy.core.function
---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-483-7a4eba796946> in <module>()
----> 1 sympy.core.function

AttributeError: module 'sympy.core.core' has no attribute 'function'

In [484]: from sympy.core import function

In [485]: function
Out[485]: <module 'sympy.core.function' from '/dev/shm/gerrit/venv/stable-3.5/lib/python3.5/site-packages/sympy/core/function.py'>
@gerritholl
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This happens because sympy/__init__.py has a from .core import *, this imports sympy.core.core to replace sympy.core, which makes the other sympy.core.* modules not directly accessible.

skirpichev added a commit to skirpichev/diofant that referenced this issue Feb 1, 2017
@skirpichev
Mention issue, closed with diofant#164
21cee89 
In [1]: import diofant.core.function

In [2]: diofant.core.function
Out[2]: <module 'diofant.core.function' from
'/home/sk/src/diofant/diofant/core/function.py'>

Closes sympy/sympy#12115
skirpichev added a commit to skirpichev/diofant that referenced this issue Feb 1, 2017
@skirpichev
Mention issue, closed with diofant#164
86d4575 
In [1]: import diofant.core.function

In [2]: diofant.core.function
Out[2]: <module 'diofant.core.function' from
'/home/sk/src/diofant/diofant/core/function.py'>

Closes sympy/sympy#12115
@Smit-create
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Currently:

>>> import sympy.core.function
>>> sympy.core.function
<module 'sympy.core.function' from '/home/smit/Smit Lunagariya/sympy/sympy/core/function.py'>

@oscarbenjamin Is this issue fixed?

@oscarbenjamin
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Yes, this is fixed.

@Jhsmit Jhsmit mentioned this issue Mar 19, 2020
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@gerritholl @oscarbenjamin @Smit-create