我在Mac OS 10.15.7 (Catalina)上使用python 3.9.1。Python是和自制软件一起安装的。当我导入tkinter时，我得到的是8.5.9版本，而我想要的是8.6版本。
brew info tcl-tk给出
tcl-tk: stable 8.6.10 (bottled) [keg-only]
Tool Command Language
https://www.tcl-lang.org
/usr/local/Cellar/tcl-tk/8.6.10 (3,022 files, 50.9MB)
Poured from bottle on 2020-03-10 at 17:57:25
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/tcl-tk.rb
License: TCL
==> Dependencies
Required: openssl@1.1 ✔
==> Caveats
tcl-tk is keg-only, which means it was not symlinked into /usr/local,
because macOS already provides this software and installing another version in
parallel can cause all kinds of trouble.
If you need to have tcl-tk first in your PATH run:
echo 'export PATH="/usr/local/opt/tcl-tk/bin:$PATH"' >> /Users/saul/.bash_profile
For compilers to find tcl-tk you may need to set:
export LDFLAGS="-L/usr/local/opt/tcl-tk/lib"
export CPPFLAGS="-I/usr/local/opt/tcl-tk/include"
For pkg-config to find tcl-tk you may need to set:
export PKG_CONFIG_PATH="/usr/local/opt/tcl-tk/lib/pkgconfig"
==> Analytics
install: 362,394 (30 days), 390,184 (90 days), 474,512 (365 days)
install-on-request: 9,609 (30 days), 17,845 (90 days), 60,715 (365 days)
build-error: 0 (30 days)
我把建议的行放在我的bash_profile中，但它们似乎没有任何效果。
>>> import tkinter
>>> tcl = tkinter.Tcl()
>>> print(tcl.call("info", "patchlevel"))
8.5.9
我在网上找到了很多关于这个问题的资料，但它们似乎都与pyenv有关，我不用pyenv，而且除了上面描述的似乎与我的情况有关的之外，我找不到任何其他的。
我需要做什么?
编辑
我也试着把这些行添加到我的。bashrc文件中，但是没有效果。
显然我的python过时了。(我从没想过这一点，因为这是上个月的。)总之,
brew update && brew upgrade python@3.9
固定的事情。
Brew本身在python 3.9中提供了解决方案。你只需要安装单独的软件包:
brew install python-tk@3.9