pyinstaller打包含有folium模块，运行错误的解决方法

 在用pyinstaller打包folium模块的程序后，运行出现一堆错误代码。解决办法参照https://stackoverflow.com/questions/54836440/branca-python-module-is-unable-to-find-2-essential-json-files-when-running-an-ex

基本思路是修改python库site-packages内对应文件里的环境变量

1. \folium\folium.py

2. \folium\raster_layers.py

3. \branca\element.py

#ENV = Environment(loader=PackageLoader('folium', 'templates'))
import os, sys
from jinja2 import FileSystemLoader
if getattr(sys, 'frozen', False):
        # we are running in a bundle
    templatedir = sys._MEIPASS
else:
    # we are running in a normal Python environment
    templatedir = os.path.dirname(os.path.abspath(__file__))
ENV = Environment(loader=FileSystemLoader(templatedir + '\\templates'))

修改*.spec里面的datas参数，datas修改成本地文件目录

# -*- mode: python -*-

block_cipher = None


a = Analysis(['time_punch_map.py'],
         pathex=['C:\\Users\\XXXX\\PycharmProjects\\TimePunchMap'],
         binaries=[],
         datas=[
         ("C:\\Users\\venv\\Lib\\site-packages\\branca\\*.json","branca"),
         ("C:\\Users\\venv\\Lib\\site-packages\\branca\\templates","templates"),
         ("C:\\Users\\venv\\Lib\\site-packages\\folium\\templates","templates"),
         ],
         hiddenimports=[],
         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,
      a.binaries,
      a.zipfiles,
      a.datas,
      [],
      name='time_punch_map',
      debug=False,
      bootloader_ignore_signals=False,
      strip=False,
      upx=True,
      runtime_tmpdir=None,
      console=True )

File "site-packages\folium\__init__.py", line 5, 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 "C:\Users\yf\Anaconda3\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 623, in exec_module
    exec(bytecode, module.__dict__)
  File "site-packages\branca\__init__.py", line 1, 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 "C:\Users\y\Anaconda3\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 623, in exec_module
    exec(bytecode, module.__dict__)
  File "site-packages\branca\colormap.py", line 15, 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 "C:\Users\y\Anaconda3\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 623, in exec_module
    exec(bytecode, module.__dict__)
  File "site-packages\branca\element.py", line 21, in <module>
  File "site-packages\jinja2\loaders.py", line 310, in __init__
ValueError: The 'branca' package was not installed in a way that PackageLoader understands.