标签：inpu hat number loop bre 使用 put highlight higher
格式：
i1 = 3
if i1 > 4:
print(‘yes you are right‘)
elif 0 < i1 < 4:
print(‘im dont konw‘)
else:
print(‘no you are wrong‘)
注意if、elif以及else后面的（:）符号，我们通过它告诉Python下面跟着一个语句块。
number = 23
running = True
while running:
guess = int(input(‘enter an integer:‘))
if guess == number:
print(‘congratulations,you guessed it‘)
running = False
elif guess < number:
print(‘no,it is a little lower than that‘)
else:
print(‘no,it is a little higher than that ‘)
else:
print(‘the while loop is over‘)
print(‘done‘)
输出结果：
enter an integer:22
no,it is a little lower than that
enter an integer:24
no,it is a little higher than that
enter an integer:23
congratulations,you guessed it
the while loop is over
done
注意：在Python2.x版本中输入使用的是raw_input而在Python3.x版本中输入使用的是input。并且后面都要跟冒号。
格式：for...in
for i in range(1,5):
print(i)
else:
print(‘the loop is over‘)
结果：
C:\Python36\python.exe C:/Users/蔡瑞/7.py
1
2
3
4
the loop is over
Process finished with exit code 0
注意：range(1,5)只是输出1-4没有5。还有，else部分是可选的，如果包含else，它总是在for循环结束后执行一次，除非遇到break语句。
for循环在这个范围内递归，这就相当于把序列中的每个数（或对象）赋值给i，一次一个，然后以每个i的值执行这个程序块。
Programming is fun
When the work is done
if you wanna make your work also fun:
use Python
标签：inpu hat number loop bre 使用 put highlight higher
原文地址：http://www.cnblogs.com/caicairui/p/7496596.html
