can't get --install-completion to work

given this program:

#!/usr/bin/env python
  port typer

app = typer.Typer()

@app.command()
def foo():
    print('foo')

@app.command()
def bar():
    print('bar')

if __name__ == "__main__":
    app()

I run: ./foo.py --install-completion

I see:

zsh completion installed in /Users/tchan/.zshrc.
Completion will take effect once you restart the terminal.

I source my .zshrc and then type ./foo.py and hit tab

I see this:

./foo.py env: foo.py: No such file or directory

[shelper]

well , i think i solved this problem by adding the following lines to my .zshrc hope this helps

autoload -Uz compinit
zstyle ':completion:*' menu select
fpath+=~/.zfunc
compinit

[wpm]

From here I got the workaround to add compinit -D to the end of my .zshrc file. I have no idea what it means, but it worked.