IPython consoles are not independent in terms of loading modules on Windows

Issue Report Checklist

• Searched the issues page for similar reports
• Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• Could not reproduce inside jupyter qtconsole (if console-related)
• Tried basic troubleshooting (if a bug/error)
  • Restarted Spyder
  • Reset preferences with spyder --reset
  • Reinstalled the latest version of Anaconda
  • Tried the other applicable steps from the Troubleshooting Guide
• Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

If you open a second ipython console and run a script that imports a local file that shares its filename with a module imported by the first ipython console, the import fails.

What steps reproduce the problem?

1. Create the following folder structure (with the content shown below):
   • one/one.py
   • one/utilities.py
   • two/two.py
   • two/utilities.py
2. Open one/one.py and two/two.py in the editor.
3. With one/one.py open, click the “Run” button.
   • Output (which is correct) looks like this:

     In [1]: runfile('C:/spydertest/one/one.py', wdir='C:/spydertest/one')
     Utility 1
     
     In [2]: 
     

4. Click the gear icon in the top-right of the console window and click “Open an IPython console”.
5. Switch to the two/two.py tab in the editor.
6. Click the “Run” button.
7. Exception is raised. If you do this in the opposite order (running two.py, opening a new console, running one.py), the exception is raised when running one.py instead.

What is the expected output? What do you see instead?

Expected output:

In [1]: runfile('C:/spydertest/two/two.py', wdir='C:/spydertest/two')
Utility 2

In [2]: 

Actual output:

In [1]: runfile('C:/spydertest/two/two.py', wdir='C:/spydertest/two')
Traceback (most recent call last):

  File "<ipython-input-1-9cf34275bbc9>", line 1, in <module>
    runfile('C:/spydertest/two/two.py', wdir='C:/spydertest/two')

  File "c:\applications\development\languages\python\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 827, in runfile
    execfile(filename, namespace)

  File "c:\applications\development\languages\python\lib\site-packages\spyder_kernels\customize\spydercustomize.py", line 110, in execfile
    exec(compile(f.read(), filename, 'exec'), namespace)

  File "C:/spydertest/two/two.py", line 1, in <module>
    from utilities import two_utility

ImportError: cannot import name 'two_utility' from 'utilities' (C:\spydertest\one\utilities.py)


In [2]: 

Files used to demonstrate issue:

one/one.py:

from utilities import one_utility

print(one_utility())

one/utilities.py:

def one_utility():
    return "Utility 1"

two/two.py:

from utilities import two_utility

print(two_utility())

two/utilities.py:

def two_utility():
    return "Utility 2"

Paste Traceback/Error Below (if applicable)

See above.

Versions

• Spyder version: 3.3.6
• Python version: 3.7.1 64-bit
• Qt version: 5.6.2
• PyQt version: 5.6
• Operating System name/version: Windows 10

Dependencies

IPython >=4.0     :  7.7.0 (OK)
cython >=0.21     :  0.29.12 (OK)
jedi >=0.9.0      :  0.13.3 (OK)
matplotlib >=2.0.0:  2.2.2 (OK)
nbconvert >=4.0   :  5.5.0 (OK)
numpy >=1.7       :  1.16.4 (OK)
pandas >=0.13.1   :  0.25.0 (OK)
pycodestyle >=2.3 :  2.5.0 (OK)
pyflakes >=0.6.0  :  2.1.1 (OK)
pygments >=2.0    :  2.4.2 (OK)
pylint >=0.25     :  2.3.1 (OK)
qtconsole >=4.2.0 :  4.5.2 (OK)
rope >=0.9.4      :  0.14.0 (OK)
sphinx >=0.6.6    :  2.1.2 (OK)
sympy >=0.7.3     :  1.4 (OK)

[ccordoba12]

@dalthviz, please try with the latest master of Spyder and spyder-kernels. PR spyder-ide/spyder-kernels#131 could have solved this problem.

[ccordoba12]

Thanks for testing this @bcolsen!

@dalthviz, are you able to reproduce this on Windows?