执行 Plotly Dash .exec 文件时出现 PyInstaller 错误

Question

我正在尝试创建一个 .exe 文件来运行使用 Plotly Dash 创建的 python 仪表板。一旦我使用 PyInstaller 创建文件并尝试运行它，我就会收到此错误：

Traceback (most recent call last):
  File "app.py", line 2, in <module>
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "/Users/mohamedmartino/opt/anaconda3/lib/python3.7/site-packages/PyInstaller/loader/pyimod03_importers.py", line 623, in exec_module
    exec(bytecode, module.__dict__)
  File "site-packages/dash_core_components/__init__.py", line 12, in <module>
FileNotFoundError: [Errno 2] No such file or directory: '/var/folders/np/m30g9mj57h72n68qxc2tq61m0000gn/T/_MEI2yKNs4/dash_core_components/package-info.json'
[85571] Failed to execute script app

• 我是编码新手，我无法弄清楚为什么找不到 dcc
  依赖项。有没有更好的方法将我的模块编译成一个
  可执行文件？

我有一些 python 模块和 excel 文件以及一个包含图像和 css 文件的 -asset 文件夹。

Answer 1

看来我们需要修改 .spec 文件（见下面的 sample.spec ）。
修改spec文件后，在控制台输入'pyinstaller ***.spec'（好像'--onefile'选项不起作用），然后你就可以从浏览器连接你的dash URL。

#Sample.spec
# -*- mode: python ; coding: utf-8 -*-

#manually add Start to avoid rerusion limit error==>
import sys
sys.setrecursionlimit(5000)
#manually add End<==

block_cipher = None


a = Analysis(['dashtest.py'],
             pathex=['C:\\Users\\Owner\\Documents\\python\\Simulatortest\\sandbox'],
             binaries=[],
             #modified Start==>
             datas=[
                 ('C:\\Users\\Owner\\anaconda3\\pkgs\\dash-core-components-1.3.1-py_0\\site-packages\\dash_core_components\\', 'dash_core_components'),
                 ('C:\\Users\\Owner\\anaconda3\\pkgs\\dash-html-components-1.0.1-py_0\\site-packages\\dash_html_components\\', 'dash_html_components'),
                 ('C:\\Users\\Owner\\anaconda3\\pkgs\\dash-renderer-1.1.2-py_0\\site-packages\\dash_renderer\\','dash_renderer'),
                 ],
             hiddenimports=['pkg_resources.py2_warn'],
             #modified End<==
             hookspath=[],
             runtime_hooks=[],
             excludes=[],
             win_no_prefer_redirects=False,
             win_private_assemblies=False,
             cipher=block_cipher,
             noarchive=False)
pyz = PYZ(a.pure, a.zipped_data,
             cipher=block_cipher)
exe = EXE(pyz,
          a.scripts,
          [],
          exclude_binaries=True,
          name='dashtest',
          debug=False,
          bootloader_ignore_signals=False,
          strip=False,
          upx=True,
          console=True )
coll = COLLECT(exe,
               a.binaries,
               a.zipfiles,
               a.datas,
               strip=False,
               upx=True,
               upx_exclude=[],
               name='dashtest')