python条件判断和循环语句

1、if else 语句

#需要使用int进行强制类型转换，否则接下去会报错
#python格式要求严格，代码缩进要注意

while (True):
score = int(input("what's your score?"))
if score>= 90:
print('Excellent')
if score < 60:
print('Fail')
else:
print('Good Job')

结果：

C:\Users\Admin\Anaconda3\python.exe D:/winterVocation/GeekTime/day1.py
what's your score?95
Excellent
Good Job
what's your score?20
Fail
what's your score?65
Good Job
what's your score?

2、for循环

sum = 0
for number in range(11):
sum = sum + number
print(sum)

结果：

C:\Users\Admin\Anaconda3\python.exe D:/winterVocation/GeekTime/day1.py
55

Process finished with exit code 0

3、while循环

sum = 0
number = 1
while number < 11:
sum = sum + number
number = number + 1
print(sum)

结果：

C:\Users\Admin\Anaconda3\python.exe D:/winterVocation/GeekTime/day1.py
55

Process finished with exit code 0