Python基础（一）

几个简单的Python练习题

1.使用while循环输出1到9

Python代码

counter = 1
while counter < 10:
    print(counter)
    counter += 1

输出如下

2.求出1到100所有数的和

Python代码

counter = 1
result = 0
while counter < 101:
    result += counter
    counter += 1
print("sum of 1 to 100:", str(result))

输出如下

3.输出1到100内的所有基数

Python代码

counter = 1
print("odd numbers of 1 to 100:")
while counter < 101:
    if counter % 2 == 1:
        print(counter)
    counter += 1

输出如下

4.输出1到100内的所有偶数

Python代码

counter = 1
print("odd numbers of 1 to 100:")
while counter < 101:
    if counter % 2 == 0:
        print(counter)
    counter += 1

输出如下

5.求1-2+3-4+5..+99所有数的和

Python代码

counter = 1
result = 0
while counter < 100:
    if counter % 2 == 1:
        result += counter
    elif counter %2 == 0:
        result -= counter
    counter += 1
print("sum of 1-2+3-4...+99:", str(result))

输出如下