Python实现循环语句的方式分享

for variable in sequence:
    # 循环体

numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
for number in numbers:
    print(number**2)

s = "hello world"
for char in s:
    print(char.upper())

d = {'apple': 2, 'banana': 3, 'orange': 4}
for key, value in d.items():
    print(key, value)

with open('file.txt', 'r') as f:
    for line in f:
        print(line.strip())

fruits = ['apple', 'banana', 'orange', 'grape']
i = 0
while i < len(fruits):
    print(fruits[i])
    i += 1

import random

number = random.randint(1, 10)
guess = 0
while guess != number:
    guess = int(input("猜一个 1-10 之间的数字："))
    if guess > number:
        print("猜大了！")
    elif guess < number:
        print("猜小了！")
    else:
        print("恭喜你，猜中了！")

while 条件:
    # 循环体

range(start, stop, step)

for i in range(1, 11):
    print(i)

numbers = list(range(1, 11))
print(numbers)

for i in range(1, 11, 2):
    print(i)

fruits = ['apple', 'banana', 'orange', 'grape']
for i in range(len(fruits)):
    print(fruits[i])

for i, value in enumerate(sequence):
    # 循环体

numbers = [1, 2, 3, 4, 5]
for i, number in enumerate(numbers):
    print("索引位置：{}，对应的元素值：{}".format(i, number))

fruits = ['apple', 'banana', 'orange', 'grape']
for i, fruit in enumerate(fruits):
    if fruit == 'banana':
        print("banana 的位置是：", i)