Python path added to $PATH -- cannot find origin
zsh reads from up to 4files on start up 


  If ZDOTDIR is not set, then the value of HOME is used; this is the usual case.


$ZDOTDIR/.zshenv
$ZDOTDIR/.zprofile
$ZDOTDIR/.zshrc
$ZDOTDIR/.zlogin


You need to look in all of them. 

.zshrc is read every time a shell or sub shell is started.
.zprofile is read when you start a login shell - ie the first shell you start through terminal, and this is where I would put the PATH changes