Python在2.7中以不同的方式设置全局变量

def set_global_variable():
    global global_var
    global_var = "This is a global variable"

set_global_variable()
print(global_var)  # 输出：This is a global variable

# global_variables.py
global_var = "This is a global variable"

# main.py
import global_variables

print(global_variables.global_var)  # 输出：This is a global variable
global_variables.global_var = "Modified global variable"
print(global_variables.global_var)  # 输出：Modified global variable

# global_variables.py
global_vars = {
    "global_var1": "This is global variable 1",
    "global_var2": "This is global variable 2"
}

# main.py
import global_variables

print(global_variables.global_vars["global_var1"])  # 输出：This is global variable 1
global_variables.global_vars["global_var1"] = "Modified global variable 1"
print(global_variables.global_vars["global_var1"])  # 输出：Modified global variable 1