1. python3-pip installed but pip3 command not found?
sudo apt install python3-pip 执行命令，显示已经安装成功， 但是，执行的时候却找不到pip3
user@conti-del-lp-018:~/Documents/backup_code/RF$ sudo pip3 install --upgrade pip
sudo: pip3: command not found
解决办法
user@conti-del-lp-018:~$ dpkg -L python3-pip
....
/usr/share
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/pip3.1.gz
/usr/share/doc
/usr/share/doc/python3-pip
/usr/share/doc/python3-pip/copyright
/usr/bin
/usr/bin/pip3
/usr/share/doc/python3-pip/changelog.Debian.gz
user@conti-del-lp-018:~$ sudo ln -s /usr/bin/pip3 /usr/local/bin/pip3
2. sudo pip3 install -U -f https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-16.04 wxPython
报如下错误：
Error running configure
ERROR: failed building wxWidgets
Traceback (most recent call last):
File "build.py", line 1471, in cmd_build_wx
wxbuild.main(wxDir(), build_options)
File "/tmp/pip-build-0crvl0jr/wxPython/buildtools/build_wxwidgets.py", line 373, in main
"Error running configure")
File "/tmp/pip-build-0crvl0jr/wxPython/buildtools/build_wxwidgets.py", line 85, in exitIfError
raise builder.BuildError(msg)
buildtools.builder.BuildError: Error running configure
Finished command: build_wx (0m3.191s)
Finished command: build (0m3.191s)
Command '"/usr/bin/python3" -u build.py build' failed with exit code 1.
解决办法：