pythontex 中未定义变量

Question

当我运行pdflatex、pythontex和时pdflatex，pythontex 引发错误：NameError: name x is not defined。

但是当我用Python运行py文件时，它并没有给出错误。

梅威瑟：

\begin{filecontents*}[overwrite]{myFile.py}
import tkinter as tk
from tkinter import ttk

root = tk.Tk()
root.geometry('300x200')
root.resizable(False, False)
root.title('Checkbox Demo')

agreement = tk.IntVar()


def print_changed():
    global x
    x = r"\setboolean{mybool}{true}" if agreement.get() else r"\setboolean{mybool}{false}"


ttk.Checkbutton(root,
                text='I agree',
                command=print_changed,
                variable=agreement,
                onvalue=1,
                offvalue=0).pack()


root.mainloop()

\end{filecontents*}

\documentclass{article}

\usepackage{pythontex}
\usepackage{ifthen}

\begin{document}

\newboolean{mybool}

\begin{pycode}
import myFile
\end{pycode}
\py{x}

\ifthenelse{\boolean{mybool}}{%
    Print report
}{%
    Do not print report
}

\end{document}