Import Python to LaTeX

import_python.tex

% Default fixed font does not support bold face
\DeclareFixedFont{\ttb}{T1}{txtt}{bx}{n}{12} % for bold
\DeclareFixedFont{\ttm}{T1}{txtt}{m}{n}{12}  % for normal

% Custom colors
\usepackage{color}
\definecolor{deepblue}{rgb}{0,0,0.5}
\definecolor{deepred}{rgb}{0.6,0,0}
\definecolor{deepgreen}{rgb}{0,0.5,0}

% https://www.ctan.org/pkg/listings
\usepackage[procnames]{listings}

% Python style for highlighting
\newcommand\pythonstyle{\lstset{
language=Python,
basicstyle=\ttm,
otherkeywords={self},             % Add keywords here
keywordstyle=\ttb\color{deepblue},
emph={MyClass,__init__},          % Custom highlighting
emphstyle=\ttb\color{deepred},    % Custom highlighting style
stringstyle=\color{deepgreen},
frame=tb,                         % Any extra options here
showstringspaces=false           % 
}}

% Python environment
\lstnewenvironment{python}[1][]
{
\pythonstyle
\lstset{
1,literate={ö}{{\"o}}1
            {ä}{{\"a}}1
            {å}{{\aa}}1
            {Å}{{\AA}}1
            {Ä}{{\"A}}1
            {Ö}{{\"O}}1
            {~}{{\tilde}}1
            {é}{{\´{e}}}1
            {É}{{\´{E}}}1
}
}
{}

% Python for external files
\newcommand\pythonexternal[2][]{{
\pythonstyle
\lstinputlisting[#1]{#2}}}

% Python for inline
\newcommand\pythoninline[1]{{\pythonstyle\lstinline!#1!}}

Really good work! could you please tell me how can I import the first 100 lines of the external code into my text ?