似乎无法使我的其他陈述在python-turtle中正常工作
抱歉,我有点是初学者,我很难让其他陈述在这个程序中正常工作,可以与Python一起绘制乌龟。我尝试缩进Else语句else:print(“错误输入!”)
,但随后只是说“错误输入!”每次我做某事;该程序运行良好,但这会不断重复。如果我保留这样的其他陈述,并且我输入了其他任何内容,则“错误输入!”应该不会出现这种弹出。有人知道该怎么办吗?
例如: 如果我像在这里给它一样运行代码,这就是结果:
想做什么?
您 前进?:100(< - 我输入此)
现在,如果我放了其他东西
您想做什么?:ASBFAIFB(< - 我输入此)
您想做什么?:
它没有显示“错误的输入!” 那应该说的
另一方面,如果我再缩进其他陈述,
是结果您想做什么?:f
您想向前推多少像素? :100
错误输入!
您想做什么?:r
您想向右转几个学位?:90
<强>错误输入!
您想做什么?:100
错误输入!
您想做什么?:B
<强>错误输入!
您想做什么?:
,但是代码仍然可以正常运行,它只是不断重复“错误的输入!”一遍又一遍地
#importing turle
import turtle
#Creating our turtle and naming it
turtle = turtle.Turtle()
#Ask the user what to do and tell the instructions
#Make a function for the instructions
def instructions():
print("What do you want me to do? Please choose the letter corresponding to the action: ")
print("Forward = f")
print("Turn right = r")
print("Turn left = l")
print("Turn backwards = b")
print("If you want to stop: stop\n")
#print out the instuctions
instructions()
#Function for drawing by getting the user's input
def drawing():
while True:
user = input("What you want to do?: ")
#If they want to go forward
if user == "f":
l = int(input("How many pixels you want to go forward?: "))
turtle.forward(l)
#If they want to turn right
elif user == "r":
x = int(input("How many degrees you want to turn right?: "))
turtle.right(x)
#If they want to turn left
elif user == "l":
y = int(input("How many degrees you want to turn left?: "))
turtle.left(y)
#If they want to turn backwards
elif user == "b":
z = 180
turtle.right(z)
#If they want to stop the program
if user == "stop":
print("\nOk, I will stop the program now\n\nTo make a new drawing, re-run the program")
break
#If they type anything else
else:
print("Wrong input!")
drawing()
sorry I am a bit of a beginner and I am having trouble gettin the else statement working properly in this program i made to draw stuff in turtle with python. I tried indenting the else statementelse: print("Wrong input!")
but then it just says "Wrong input!" Everytime i do something; the program works fine but that keeps repeating. If i keep the else statement like that and I type anything else then the "Wrong input!" that is supposed to pop up doesn't appear. Anyone know what to do?
For example:
If i run the code like how i gave it here this is how it turns out:
what you want to do?: f (<-- I input this)
How many pixels you want to go forward?: 100 (<-- I input this)
and now if i put something else
what you want to do?: asbfaifb (<-- I input this)
what you want to do?:
it doesnt show the "Wrong input!" message that is supposed to say
On the other hand if I indent the else statement one more time this is the outcome
What you want to do?: f
How many pixels you want to go forward?: 100
Wrong input!
What you want to do?: r
How many degrees you want to turn right?: 90
Wrong input!
What you want to do?: 100
Wrong input!
What you want to do?: b
Wrong input!
What you want to do?:
but the code still runs fine, it just keeps repeating the "Wrong input!" over and over
#importing turle
import turtle
#Creating our turtle and naming it
turtle = turtle.Turtle()
#Ask the user what to do and tell the instructions
#Make a function for the instructions
def instructions():
print("What do you want me to do? Please choose the letter corresponding to the action: ")
print("Forward = f")
print("Turn right = r")
print("Turn left = l")
print("Turn backwards = b")
print("If you want to stop: stop\n")
#print out the instuctions
instructions()
#Function for drawing by getting the user's input
def drawing():
while True:
user = input("What you want to do?: ")
#If they want to go forward
if user == "f":
l = int(input("How many pixels you want to go forward?: "))
turtle.forward(l)
#If they want to turn right
elif user == "r":
x = int(input("How many degrees you want to turn right?: "))
turtle.right(x)
#If they want to turn left
elif user == "l":
y = int(input("How many degrees you want to turn left?: "))
turtle.left(y)
#If they want to turn backwards
elif user == "b":
z = 180
turtle.right(z)
#If they want to stop the program
if user == "stop":
print("\nOk, I will stop the program now\n\nTo make a new drawing, re-run the program")
break
#If they type anything else
else:
print("Wrong input!")
drawing()
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else
遵循最后的,如果或elif
语句。对于您来说,这是:如果用户==“ stop”:
,这意味着,如果用户不是“停止”,则告诉程序打印“错误输入”。
一个简单的修复是简单地将
更改为
,如果user ==“停止”:
elif user ==“ stop”:
else
follows the lastif
orelif
statement before it. For you, this is:if user == "stop":
Which means, if user is not "stop", you are telling the program to print "wrong input".
An easy fix is to simply change
if user == "stop":
toelif user == "stop":