python中文件中的全局模塊

Question

任何人都可以幫助我如何在python文件中聲明全局變量

在下面的python文件中，我聲明了全局變量var1：

 File locations for settings.py:
/usr/lib/python2.7/site-packages/project/settings.py

settings.py

global var1
var1 = ""

python file2.py：

 Location:
/usr/lib/python2.7/site-packages/file2.py

file2.py

from dev import fullchip
from project import settings
a = 10
b = 20
fullchip.count (a, b)
print var1

腳本fullchip.py

 location
 /usr/lib/python2.7/site-packages/dev/fullchip.py 

腳本fullchip.py

 from projects import settings
 def count(a, b):
     global var
     var1 = a + b

我正在運行file2.py

我期望var1打印“ 30”，但我卻未定義var1。 基本上我想在所有文件中使用var1作為全局變量

Answer 1

問題 ：我期望var1打印“ 20”，但我無法確定var1

1. 拼寫錯誤的project和projects

   settings.py的文件位置：
   /usr/lib/python2.7/site-packages/project/settings.py

   但使用

   from projects import settings

2. 這對我有用，不需要global ：

    from dev import fullchip from project import settings a = 10 b = 20 fullchip.count (a, b) print(settings.var1) 

輸出量

30