如何在 Python 中將用戶輸入限制為僅某些整數（即：僅在 1-100 之間，其中還包括 1 和 100）

Question

我正在嘗試為我的計算作業制作一個猜數字游戲，但我不知道如何限制用戶只能輸入某些整數（即：1-100，還包括 1 和 100）這是我目前的代碼：

import random

BOUNDS = (1, 100)
TRIES_ALLOWED = 6

the_number = random.randint(*BOUNDS)

print("\tWelcome to 'Guess My Number'!\n")
print("I'm thinking of a number between %d and %d." % BOUNDS)
print("Try to guess it in as few attempts as possible.")
print("You only have 6 attempts to guess the number.\n")

for tries in range(TRIES_ALLOWED):
guess = int(input("Take a guess: "))

if guess > 100:
    print ('That is an error please enter a number between 1 and 100')

if guess < 1:
    print ('That is an error please enter a number between 1 and 100')

if guess > the_number:
    print("The number is lower")
elif guess < the_number:
    print("The number is higher")
else:
    print("You guessed it! The number was %d" % (the_number))
    print("And it only took you %d tries!\n\n" % (tries + 1))
    break
else:
print("You failed to guess in time!\n\n")

如果你能幫助我，我將不勝感激

Answer 1

您可以嘗試使用此基本代碼來選擇 1 到 100 之間的數字

import random
num = random.randint(1, 100)
while True:
    print('Guess a number between 1 and 100')
    guess = input()
    i = int(guess)
    if i == num:
        print('You won!!!')
        break
    elif i < num:
               print('Try Higher')
    elif i > num:
               print('Try Lower')
#any recommendations for the game end
print('if you gussed less than 6 times you won')

Answer 2

def prompt_number_range(start, end):
    while True:
        prompt_str = "Please enter a number within the range {0} - {1}:".format(start, end)
        try:
            user_input = raw_input(prompt_str)
        except NameError:
            user_input = input(prompt_str)
        try:
            input_as_int = int(user_input)
            if start <= input_as_int <= end:
                return input_as_int
            else:
                print("that is not within the given boundaries")
        except ValueError:
            pass

print (prompt_number_range(1,100))

您可以在此處查看上述內容：
https://ideone.com/9mtoOt（Python 3）
https://ideone.com/W6hRGh（Python 2.7）

以下是上面的代碼合並到您的代碼中完全正常運行：

import random


def prompt_number_range(start, end):
    while True:
        prompt_str = "Please enter a number within the range {0} - {1}:".format(start, end)
        try:
            user_input = raw_input(prompt_str)
        except NameError:
            user_input = input(prompt_str)
        try:
            input_as_int = int(user_input)
            if start <= input_as_int <= end:
                return input_as_int
            else:
                print("that is not within the given boundaries")
        except ValueError:
            pass

BOUNDS = (1, 100)
TRIES_ALLOWED = 6
the_number = random.randint(*BOUNDS)

print("\tWelcome to 'Guess My Number'!\n")
print("I'm thinking of a number between %d and %d." % BOUNDS)
print("Try to guess it in as few attempts as possible.")
print("You only have 6 attempts to guess the number.\n")
for tries in range(TRIES_ALLOWED):
    user_guess = prompt_number_range(*BOUNDS)
    if user_guess == the_number:
        print("You guessed it! The number was %d" % (the_number))
        print("And it only took you %d tries!\n\n" % (tries + 1))
        break
    elif the_number < user_guess:
        print("The number is lower")
    elif the_number > user_guess:
        print("The number is higher")
else: #for loop finished normally without breaking
    print("You failed to guess in time!\n\n")

Answer 3

嘗試使用：

import random

BOUNDS = (1, 100)
TRIES_ALLOWED = 6
win = False
the_number = random.randint(*BOUNDS)

print("\tWelcome to 'Guess My Number'!\n")
print("I'm thinking of a number between %d and %d." % BOUNDS)
print("Try to guess it in as few attempts as possible.")
print("You only have 6 attempts to guess the number.\n")

for tries in range(TRIES_ALLOWED):
    guess = int(input("Take a guess: "))

    if guess > 100:
        print ('That is an error please enter a number between 1 and 100')
        continue

    elif guess < 1:
        print ('That is an error please enter a number between 1 and 100')
        continue

    if guess > the_number:
        print("The number is lower")
    elif guess < the_number:
        print("The number is higher")
    elif guess == the_number:
        win = True
        break

if win == True:
    print("You guessed it! The number was %d" % (the_number))
    print("And it only took you %d tries!\n\n" % (tries + 1))

elif win == False:
    print("You failed to guess in time!\n\n")

輸出（示例）：

Answer 4

這是你要求的嗎？

>>> number1 = -1
>>> number2 = 1
>>> number3 = 100
>>> number4 = 101
>>> number5 = 34
>>> BOUNDS = (1, 100)
>>> for number in number1, number2, number3, number4, number5:
...   print(number in range(BOUNDS[0], BOUNDS[1] + 1))
... 
False
True
True
False
True

Answer 5

如果此代碼的唯一問題是輸入驗證，則可以替換整個塊：

guess = int(input("Take a guess: "))

if guess > 100:
    print ('That is an error please enter a number between 1 and 100')

if guess < 1:
    print ('That is an error please enter a number between 1 and 100'

有了這個：

guess = None
while guess not in range(1,101):
    guess = int(raw_input("Enter a number between 1 and 100:"))

Answer 6

weight = float(input("bag weight "))
while weight<1.01 or weight>3:
        weight=float(input("Give bag weight between 1.01 and 3 :"))