这是关于验证用户输入的，我正在做一个教程，不明白他为什么定义了以下内容
以下是代码。我不明白的是他定义了3件事。 选择，Acceptable_range和ins_range。
他为什么必须在_range内定义？
def user_choice():
#Variables
# Initial
choice ='thiscanbeanything'
acceptable_range = range(0,10)
within_range = False
#Two condition to check
#Digit or within range = False
while choice.isdigit() == False or within_range==False:
choice = input("Please enter a number (0-10): ")
#Digit check
if choice.isdigit() == False:
print("sorry that is not a digit!")
#Range check
if choice.isdigit() == True:
if int(choice) in acceptable_range:
within_range = True
else:
print("sorry, you are out of acceptable range")
within_range = False
return int(choice)
Below is the code. What i dont understand is in the Initial part he defined 3 things.
choice, acceptable_range and within_range.
why did he have to define within_range?
def user_choice():
#Variables
# Initial
choice ='thiscanbeanything'
acceptable_range = range(0,10)
within_range = False
#Two condition to check
#Digit or within range = False
while choice.isdigit() == False or within_range==False:
choice = input("Please enter a number (0-10): ")
#Digit check
if choice.isdigit() == False:
print("sorry that is not a digit!")
#Range check
if choice.isdigit() == True:
if int(choice) in acceptable_range:
within_range = True
else:
print("sorry, you are out of acceptable range")
within_range = False
return int(choice)
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如果未定义 incod> insun ，则永远不会在循环时输入
，您需要将其定义为false首先输入以在循环中输入。一旦您进入循环，此值将根据选择值定义（使用Input函数）If
within_rangewasn't defined, you would never enter in thewhileloop, you need to define it to false first to enter in the loop. Once you're in the loop, this value is defined depending of thechoicevalue (with theinputfunction)Ins_Range的目的是如果用户没有提供所需的条件，则保持WILE循环函数的运行。如果提供的值不在0-10或非数字之内，则会提示用户再次提供输入。
The purpose of within_range is to keep the while loop function going if the user did not provide a required condition. In the case where if a value provided does not fall within 0-10 or is a non-digit, it will prompt the user to provide an input again.
如果您的选择不在可接受的范围内，则循环希望您再次输入该号码。
如果您的选择位于可接受的范围内，因此循环将结束，因为在代码中，将是正确的。
如果不使用ins_range，则循环将不会结束。
if your choice is not in the acceptable range, the loop wants you to enter the number again.
if your choice is in the acceptable range so the loop will be end because in the code
within_rangewill be true.If doesn't use the within_range, the loop will not end.