[英]While Loop Break
我的 Python 代碼包含一個無限循環。 如何終止無限循環?
colour = input("Which colour do you prefer? Y-R: ")
while colour not in {"Y", "R"}:
print("Please, you have to choose only Y - R.")
colour = input("Which colour do you prefer? Y-R: ")
while colour in {"Y", "R"}:
if colour == "Y":
print("First player: Y")
print("Second player: R")
else:
print("First player: R")
print("Second player: Y")
使用break
:
colour = input("Which colour do you prefer? Y-R: ")
while colour not in ["Y", "R"]:
print("Please, you have to choose only Y - R.")
colour = input("Which colour do you prefer? Y-R: ")
if colour in ["Y", "R"]:
if colour == "Y":
print("First player: Y")
print("Second player: R")
break
else:
print("First player: R")
print("Second player: Y")
break
然而,這是一個更好的解決方案:
colour = input("Which colour do you prefer? Y-R: ")
while colour not in ["Y", "R"]:
print("Please, you have to choose only Y - R.")
colour = input("Which colour do you prefer? Y-R: ")
if colour == "Y":
print("First player: Y")
print("Second player: R")
else:
print("First player: R")
print("Second player: Y")
你真的只需要一個循環。
while True:
colour = input("Which colour do you prefer? Y-R: ")
if colour in {"Y", "R"}:
first, second = "YR" if colour == "Y" else "RY"
break
print("Please, you have to choose only Y - R.")
print(f"First player: {first}")
print(f"Second player: {second}")
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