Python中的控制流（while & range ）

最新推荐文章于 2025-04-04 04:15:00 发布

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本文介绍了Python编程中的两种控制流语句：while循环和range函数的使用。通过示例展示如何使用while实现条件判断及退出循环，利用range进行循环计数，并在for循环中结合条件判断进行游戏猜数字的模拟。最后，代码以'Done'结束。

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1. while语句
2. range语句

例：

#while example

number = 59
guess_flag = False

while guess_flag == False:
guess = int(input('Enter an integer : '))
if guess == number:
# New block starts here
guess_flag = True
# New block ends here
elif guess < number:
# Another block
print('No, the number is higher than that, keep guessing')
# You can do whatever you want in a block ...
else:
print('No, the number is a lower than that, keep guessing')
# you must have guessed > number to reach here

print('Bingo! you guessed it right.')
print('(but you do not win any prizes!)')

print('Done')

#For example

number = 59
num_chances = 3
print("you have only 3 chances to guess")

for i in range(1, num_chances + 1):
print("chance " + str(i))
guess = int(input('Enter an integer : '))
if guess == number:
# New block starts here
print('Bingo! you guessed it right.')
print('(but you do not win any prizes!)')
break #跳出循环
# New block ends here
elif guess < number:
# Another block
print('No, the number is higher than that, keep guessing, you have ' + str(num_chances - i) + ' chances left')
# You can do whatever you want in a block ...
else:
print('No, the number is lower than that, keep guessing, you have ' + str(num_chances - i) + ' chances left')
# you must have guessed > number to reach here
print('Done')