[英]can't change global variable inside function using parameter in python
import pickle
name = 'something'
def save(variable, value):
obj = str(value)
file = f'{variable}.pkl'
fileObj = open(file, 'wb')
pickle.dump(obj, fileObj)
global variable
variable = value
fileObj.close()
def read(variable):
file = f'{variable}.pkl'
with open(file, 'rb') as oFile:
content = pickle.load(oFile)
print(content)
oFile.close()
save(name, 'else')
print('!! > ',name)
read(name)
Error: File "h:/PythonProjects/Python.py", line 10 global variable SyntaxError: name 'variable' is used prior to global declaration错误:文件“h:/PythonProjects/Python.py”,第 10 行全局变量 SyntaxError:在全局声明之前使用了名称“变量”
any suggestions about how to change global variable with a parameter?关于如何使用参数更改全局变量的任何建议?
Before using the global statement, you need to define a global variable...在使用 global 语句之前,您需要定义一个全局变量...
variable = None
def bla():
global variable
variable = 22
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