pyinstaller 和 reportlab 的问题

Question

好的，所以我有一个要编译的python项目，所以我决定使用pyinstaller（第一次编译python）。现在它编译得很好，但是当我运行 exe 时它返回-1。所以经过一番折腾，我发现它与reportlab.platypus有关。

所以我的第一直觉是检查使用钩子是否改变了任何东西，所以我尝试添加reportlab.pdfbase._fontdata 和reportlab.lib.utils 钩子（这些是我能找到的与reportlab 相关的唯一钩子文件）。尽管做了这些努力，它仍然失败了。

这是从终端运行 exe 时的输出：

Traceback (most recent call last):
  File "<string>", line 12, in <module>
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
  File "C:\Users\Jon\Desktop\PyInstaller-3.1.1\PyInstaller\loader\pyimod03_importers.py", line 389, in load_module
    exec(bytecode, module.__dict__)
  File "Board_builder.py", line 5, in <module>
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
  File "C:\Users\Jon\Desktop\PyInstaller-3.1.1\PyInstaller\loader\pyimod03_importers.py", line 389, in load_module
    exec(bytecode, module.__dict__)
  File "site-packages\reportlab\platypus\__init__.py", line 7, in <module>
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
  File "C:\Users\Jon\Desktop\PyInstaller-3.1.1\PyInstaller\loader\pyimod03_importers.py", line 389, in load_module
    exec(bytecode, module.__dict__)
  File "site-packages\reportlab\platypus\flowables.py", line 32, in <module>
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
  File "C:\Users\Jon\Desktop\PyInstaller-3.1.1\PyInstaller\loader\pyimod03_importers.py", line 389, in load_module
    exec(bytecode, module.__dict__)
  File "site-packages\reportlab\lib\styles.py", line 28, in <module>
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
  File "C:\Users\Jon\Desktop\PyInstaller-3.1.1\PyInstaller\loader\pyimod03_importers.py", line 389, in load_module
    exec(bytecode, module.__dict__)
  File "site-packages\reportlab\rl_config.py", line 131, in <module>
  File "site-packages\reportlab\rl_config.py", line 102, in _startUp
  File "site-packages\reportlab\lib\utils.py", line 695, in rl_isdir
AttributeError: 'FrozenImporter' object has no attribute '_files'
main returned -1

据我所知，它在“Board_builder.py”（在我的项目中处理 reportlab 的文件）中运行第 5 行时崩溃，这是该文件的前 5 行：

import subprocess
import datetime
from reportlab.lib.units import mm, inch
from reportlab.lib.pagesizes import legal, landscape
from reportlab.platypus import SimpleDocTemplate, Table

我不知道它抛出的 AttributeError 是什么意思，非常欢迎任何建议！

Answer 1

好吧，我搞定了，

决定查看 AttributeError 究竟是从哪里抛出的，所以我检查了 reportlab/rl_config.py 和 reportlab/lib/utils.py 文件，发现它正在递归地检查对象以查找目录（如 rl_isdir 暗示的那样）。 FrozenImporter 是如何被其他对象列表检查的

所以我换了行：

return len(list(filter(lambda x,pn=pn: x.startswith(pn),list(__loader__._files.keys()))))>0

与：

try:
    return len(list(filter(lambda x,pn=pn: x.startswith(pn),list(__loader__._files.keys()))))>0
except AttributeError:
    return False

这可能不是解决问题的最干净最有效的方法，但它只涉及原始代码的一行，所以我发现这是最直接的解决方案。