[英]How to pass local variables from one function into another?
我正在尝试制作基于文本的游戏,但是在将一些变量从一个函数传递到另一个函数时遇到了麻烦。 我想出了如何在函数内修改变量并返回新值以覆盖原始值。
我需要什么帮助是如何获得room1()
和room2()
变量返回something1(x)
和something2(y)
和成main()
来解锁if
语句。
我应该为something1(x)
和something2(y)
使用两个不同的函数还是一个函数?
这是我遇到的问题的一般示例代码:
def something1(x):
x += 0
return x
def something2(y):
y += 0
return y
def main():
print("1. Try to open door")
print("2. Go to room1")
print("3. Go to room2")
choice = int(input("Enter selection: ")
if choice == "1":
# Trying to get this if statement to work with the variables
# Don't know which function or parameters to pass in order to get it to work
if x == 3 and y == 2:
print("You're free")
else:
print("You're not free")
elif choice == "2":
room1()
elif choice == "3":
room2()
else:
print("ERROR")
main()
def room1():
print("1. Push thing1")
print("2. Push thing2")
print("3. Push thing3")
print("4. Return to previous room")
pushChoice = input("Enter selection: ")
if pushChoice == "1":
print("Thing1 pushed")
room1()
elif pushChoice == "2":
print("Thing2 pushed")
room1()
elif pushChoice == "3":
print("Thing3 pushed")
# The modified variable x for something1(x)
x = 3
x = something1(x)
room1()
elif pushChoice == "4":
main1()
else:
print("ERROR")
room1()
def room2():
print("1. Pull thingA")
print("2. Pull thingB")
print("3. Pull thingC")
print("4. Return to previous room")
pullChoice = input("Enter selection: ")
if pullChoice == "1":
print("ThingA pushed")
room1()
elif pullChoice == "2":
print("ThingB pushed")
# The modified variable y for something2(y)
y = 2
y = something1(y)
room1()
elif pullChoice == "3":
print("ThingC pushed")
room1()
elif pullChoice == "4":
main1()
else:
print("ERROR")
room1()
您可以pass
返回变量将变量从一个函数pass
给另一个函数。 但是,为此,该函数必须在函数体内调用另一个函数,例如:
def addandsquare(x, y):
y = squarefunction(x+y) # sum x+y is passed to squarefunction, it returns the square and stores it in y.
return y
def squarefunction(a):
return (a*a) # returns the square of a given number
print(addandsquare(2, 3)) # prints 25
但是,如果您不能在函数体内调用函数,而是想使用该函数的局部变量,则可以将该变量声明为两个函数的全局变量。
这是一个例子:
globvar = 0
def set_globvar_to_one():
global globvar # Needed to modify global copy of globvar
globvar = 1
def print_globvar():
print globvar # No need for global declaration to read value of globvar
set_globvar_to_one()
print_globvar() # Prints 1
希望这可以帮助!
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