[英]How to fix a while loop that goes on forever in Python?
I am trying to create a simple while loop that will run the commands start, stop, quit, and help.我正在尝试创建一个简单的 while 循环,它将运行命令启动、停止、退出和帮助。 Start, stop, and help will just display some printed text.开始、停止和帮助只会显示一些打印文本。 After they are run, I want it to keep going on to another command.在它们运行之后,我希望它继续执行另一个命令。 However, on quit I want the whole program to stop.但是,在退出时,我希望整个程序停止。
input_command = input("> ").lower()
while input_command != "quit":
print(input_command)
if input_command == "start":
print("The car is ready! VROOM VROOM!")
print(input_command)
elif input_command == "stop":
print("Car stopped.")
elif input_command == "help":
print("""
start - starts the car
stop - stops the car
quit - exits the program
""")
else:
print("Sorry, I don't understand that...")
You never reassign input command so it only ever takes input once,您永远不会重新分配输入命令,因此它只需要输入一次,
input_command = ''
while input_command != "quit":
input_command = input("> ").lower()
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