Pip 包已安装但无法运行

Question

我是 ubuntu 新手，我已经通过 pip 安装了许多包，但它们不起作用并出现这个错误。

zsh：未找到命令：ipython

我尝试了很多方法，但是注销并登录后，仍然出现同样的错误，直到我输入source ~/.profile，然后才能正常工作。

〜/ .profile

# ~/.profile: executed by the command interpreter for login shells.
# This file is not read by bash(1), if ~/.bash_profile or ~/.bash_login
# exists.
# see /usr/share/doc/bash/examples/startup-files for examples.
# the files are located in the bash-doc package.

# the default umask is set in /etc/profile; for setting the umask
# for ssh logins, install and configure the libpam-umask package.
#umask 022

# if running bash
if [ -n "$BASH_VERSION" ]; then
    # include .bashrc if it exists
    if [ -f "$HOME/.bashrc" ]; then
    . "$HOME/.bashrc"
    fi
fi

# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/bin" ] ; then
    PATH="$HOME/bin:$PATH"
fi

# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/.local/bin" ] ; then
    PATH="$HOME/.local/bin:$PATH"
fi

我也在主目录中的文件export PATH=~/.local/bin:$PATH末尾添加了内容并进行了编辑，但这对我没有帮助。.profile/etc/skel/.profile

非常感谢您的帮助