pyenv doesn't work with tcl-tk installed by homebrew.

Problems encountered

When I tried to use tkinter from python installed using pyenv on Mac, I got the following error.

Traceback (most recent call last):
  File "./annotate.py", line 3, in <module>
    import tkinter
  File "/Users/???/.pyenv/versions/3.7.4/lib/python3.7/tkinter/__init__.py", line 36, in <module>
    import _tkinter # If this fails your Python may not be configured for Tk
ModuleNotFoundError: No module named '_tkinter'

The environment is

• MacOS Catalina 10.15.1
• pyenv 1.2.15

How Gugu was found (and didn't solve)

Reinstall python with pyenv

If you have python installed with pyenv, uninstalling it and installing it again seems to solve the problem.

I found the following page:

• https://qiita.com/4hiziri/items/aba80f0bc92300ea22e2
• https://teratail.com/questions/190225

Specifically, it feels like ↓.

$ pyenv versions
 system

• 3.7.5 #Since the currently used python was 3.7.5 $ pyenv uninstall 3.7.5 # Uninstall python 3.7.5 $ brew install tcl-tk # install tcl-tk with homebrew $ export LDFLAGS = "-L / usr / local / opt / tcl-tk / lib" # required for tcl-tk development $ export CPPFLAGS = "-I / usr / local / opt / tcl-tk / include" # After doing it thoroughly $ pyenv install 3.7.5 # Install python 3.7.5 again

However, when I run tkinter again ...

$ python -m tkinter
DEPRECATION WARNING: The system version of Tk is deprecated and may be removed 
in a future release. Please don't rely on it. Set TK_SILENCE_DEPRECATION=1 to suppress this warning.
Traceback (most recent call last):
  File "/Users/???/.pyenv/versions/3.7.4/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/Users/???/.pyenv/versions/3.7.4/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File 
"/Users/???/.pyenv/versions/3.7.4/lib/python3.7/tkinter/__main__.py", line 7, in <module>
main()
  File "/Users/???/.pyenv/versions/3.7.4/lib/python3.7/tkinter/__init__.py", line 3988, in _test
    root = Tk()
  File "/Users/???/.pyenv/versions/3.7.4/lib/python3.7/tkinter/__init__.py", line 2025, in __init__
    self._loadtk()
  File "/Users/???/.pyenv/versions/3.7.4/lib/python3.7/tkinter/__init__.py", line 2040, in _loadtk
    % (_tkinter.TK_VERSION, tk_version))
RuntimeError: tk.h version (8.6) doesn't match libtk.a version (8.5)

I get another error. In this case, the header is compiled using version 8.6, but it seems that the library referenced at runtime is responsible for version 8.5.

Even though I googled, I couldn't find a Japanese solution.

solution

When I googled in English, I found the next page.

• https://github.com/pyenv/pyenv/issues/1375

This is it.

In other words, edit / usr / local / Cellar / pyenv / VERSION / plugins / python-build / bin / python-build and apply the following patch (although the public bath is "!" 1 Rewrite the line).

diff -c python-build.orig python-build
*** python-build.orig	2019-12-10 17:47:04.000000000 +0900
--- python-build.new	2019-12-11 11:53:17.000000000 +0900
***************
*** 772,778 ****
        export CC=clang
      fi
      ${!PACKAGE_CONFIGURE:-./configure} --prefix="${!PACKAGE_PREFIX_PATH:-$PREFIX_PATH}" \
 !       $CONFIGURE_OPTS ${!PACKAGE_CONFIGURE_OPTS} "${!PACKAGE_CONFIGURE_OPTS_ARRAY}" || return 1
    ) >&4 2>&1
  
    { "$MAKE" $MAKE_OPTS ${!PACKAGE_MAKE_OPTS} "${!PACKAGE_MAKE_OPTS_ARRAY}"
--- 772,778 ----
        export CC=clang
      fi
      ${!PACKAGE_CONFIGURE:-./configure} --prefix="${!PACKAGE_PREFIX_PATH:-$PREFIX_PATH}" \
 !       $CONFIGURE_OPTS --with-tcltk-includes='-I/usr/local/opt/tcl-tk/include' --with-tcltk-libs='-L/usr/local/opt/tcl-tk/lib -ltcl8.6 -ltk8.6            ' ${!PACKAGE_CONFIGURE_OPTS} "${!PACKAGE_CONFIGURE_OPTS_ARRAY}" || return 1
    ) >&4 2>&1
  
    { "$MAKE" $MAKE_OPTS ${!PACKAGE_MAKE_OPTS} "${!PACKAGE_MAKE_OPTS_ARRAY}"

So you can reinstall python with pyenv.

$ pyenv uninstall 3.7.5
$ pyenv install 3.7.5
$ python -m tkinter

It went well.