Python and Pyinstaller - How to import resource files? - python-3.x

Question

I have a quite simple project in python3.6 (I can't change python version):
resources/
__init__.py
file.txt
start.py
with start.py containing :
import importlib_resources
import resources
with importlib_resources.path(resources, 'file.txt') as p:
with open(p) as file:
print(file.read())
file.txt contains "Hello Word" and this sentence is correctly printed when running python start.py
But after packaging with pyinstaller with the following spec file :
# -*- mode: python ; coding: utf-8 -*-
block_cipher = None
a = Analysis(['start.py'],
pathex=['D:\\dev\\ec'],
binaries=[],
datas=[('resources','resources')],
hiddenimports=[],
hookspath=[],
runtime_hooks=[],
excludes=[],
win_no_prefer_redirects=False,
win_private_assemblies=False,
cipher=block_cipher,
noarchive=False)
pyz = PYZ(a.pure, a.zipped_data,
cipher=block_cipher)
exe = EXE(pyz,
a.scripts,
[],
exclude_binaries=True,
name='start',
debug=False,
bootloader_ignore_signals=False,
strip=False,
upx=True,
console=True )
coll = COLLECT(exe,
a.binaries,
a.zipfiles,
a.datas,
strip=False,
upx=True,
upx_exclude=[],
name='start')
the resource file is copied in pyinstaller dist folder (as explained here Pyinstaller: How to include resources from package used by importlib_resources) but I when executing the produced exe file I have this error :
PS D:\dev\ec> .\dist\start\start.exe
Traceback (most recent call last):
File "start.py", line 4, in <module>
with importlib_resources.path(resources, 'file.txt') as p:
File "contextlib.py", line 81, in __enter__
File "importlib_resources\_common.py", line 87, in _tempfile
File "tempfile.py", line 342, in mkstemp
File "tempfile.py", line 258, in _mkstemp_inner
TypeError: must be str, not method
[8148] Failed to execute script start
Can anyone help ? tks

Answer 1

finally I get rid of importlib_resources and used pkg_resources instead and it worked like a charm :
import pkg_resources
with open(pkg_resources.resource_filename('resources', 'file.txt')) as file:
print(file.read())