文件 ”<template> &quot;，第 1 行，在顶级模板代码 jinja2.exceptions.UndefinedError: &#39;Check&#39; 未定义

Question

我想使用 python GUI 创建数据输入表单，如果我在终端中运行，我会得到这样的错误消息：

File "<template>", line 1, in top-level template code
jinja2.exceptions.UndefinedError: 'Check' is undefined

但是如果我在调试模式下运行，我会收到如下消息错误：

Exception has occurred: UndefinedError 'Check' is undefined

这是我的代码：

import PySimpleGUI as sg
from pathlib import Path
import datetime
from docxtpl import DocxTemplate


dokumen_path = Path(__file__).parent / "word_template.docx"
doc = DocxTemplate(dokumen_path)

def tanggal_waktu():
    hari = datetime.datetime.today()
    return hari

layout = [
    [sg.Text("GUEST NAME"), sg.Input(key="NAMA", do_not_clear=False)],
    [sg.Text("CHECK-IN"), sg.Input(key="Check-in", do_not_clear=False)],
    [sg.Text("CHECK-OUT"), sg.Input(key="Check-out", do_not_clear=False)],
    [sg.Text("ROOM NO"), sg.Input(key="KAMAR",do_not_clear=False)],
    [sg.Text("TYPE"), sg.Input(key="TIPE",do_not_clear=False)],
    [sg.Text("PERSON"), sg.Input(key="ORANG", do_not_clear=False)],
    [sg.Text("ROOM CHARGE"), sg.Input(key="RC",do_not_clear=False),],
    [sg.Button("Submit"), sg.Exit()],
]

window = sg.Window("Invoice Palm Garden Guest House", layout, element_justification="right")

while True:
    event, values = window.read()
    if event == sg.WIN_CLOSED or event == "Exit":
        break
    if event == "Submit":
        print(values)
        values["D/T"] = tanggal_waktu()
        values["TOTAL"] = int(values["RC"])
        doc.render(values)
        output_path = Path(__file__).parent / f"{values['NAMA']}-Invoice.docx"
        doc.save(output_path)
        sg.popup("File Saved")
    else:
        pass


window.close()

这是我的word模板

word模板图片

Answer 1

您看到此错误是因为 jinja 库无法呈现 word_template.docx 模板中定义的变量。 例如，您需要将诸如{{D/T}}的变量更改为{{ d_t }}或诸如{{ time }}之类的有意义的名称。 您可以阅读 jinja2 变量定义文档https://jinja.palletsprojects.com/en/3.1.x/templates/您也可以以这种格式定义变量

{{ foo.bar }}
{{ foo['bar']}}

如果你通过 foo 字典与键bar同时渲染 bar 的值将被保存。

修改代码：invoice_gui.py

"""
invoice_gui.py
"""
import PySimpleGUI as sg
from pathlib import Path
import datetime
from docxtpl import DocxTemplate
import argparse


def tanggal_waktu():
    hari = datetime.datetime.today()
    return hari

layout = [
    [sg.Text("GUEST NAME"), sg.Input(key="name", do_not_clear=False)],
    [sg.Text("CHECK-IN"), sg.Input(key="check_in", do_not_clear=False)],
    [sg.Text("CHECK-OUT"), sg.Input(key="check_out", do_not_clear=False)],
    [sg.Text("ROOM NO"), sg.Input(key="room",do_not_clear=False)],
    [sg.Text("TYPE"), sg.Input(key="type",do_not_clear=False)],
    [sg.Text("PERSON"), sg.Input(key="person", do_not_clear=False)],
    [sg.Text("ROOM CHARGE"), sg.Input(key="rc",do_not_clear=False),],
    [sg.Button("Submit"), sg.Exit()],
]

def main(args):
    template_name = args.name
    print('template_name: %s' % (template_name))
    dokumen_path = Path(__file__).parent / "{}".format(template_name)
    doc = DocxTemplate(dokumen_path)
    window = sg.Window("Invoice Palm Garden Guest House", layout, element_justification="right")
    while True:
        event, values = window.read()
        if event == sg.WIN_CLOSED or event == "Exit":
            break
        if event == "Submit":
            print(values)
            values["time"] = tanggal_waktu()
            values["total"] = int(values["rc"])
            doc.render(values)
            output_path = Path(__file__).parent / f"{values['name']}-Invoice.docx"
            doc.save(output_path)
            sg.popup("File Saved")
        else:
            pass
    window.close()

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Python GUI script for invoice generator')
    parser.add_argument('-n', '--name',
                        default='word_template.docx', help='Specify the file name of word_template. Default is `word_template.docx`')
    main(parser.parse_args())

如何运行代码

python invoice_gui.py -n word_template.docx

带变量的修改模板。