一、如何实现输入密码时不可见?
import getpass
pwd= getpass.getpass(“请输入密码:")
(pycharm内可能不可用)
二、if.....else
age=25
guess_age = int(input('你猜我多少岁?')) #python3.X 中input的是一个str,需要int()
if guess_age == age:
print('Yes,you got it!')
elif guess_age > age:
print('think smaller')
else :
print('think bigger')
三、while
count = 0
while True:
print(‘count:’,count)
count = count +1
#guess age
age=25
count = 0
while count < 3:
guess_age = int(input('你猜我多少岁?'))
if guess_age == age:
print('Yes,you got it!')
elif guess_age > age:
print('think smaller')
else :
print('think bigger')
count +=1
if count ==3:
continue_confirm = input('Do you want to continue?':)
if continue_confirm != "n":
count = 0
#else:
# print('you have try too many times')
三、for循环
for i range(10):
print(”loop:“,i)
for i range(0,10,3):#从0开始,到10结束,步长为3
print(”loop:“,i)
#guess age
age=25
count = 0
for i in range(3):
guess_age = int(input('你猜我多少岁?'))
if guess_age == age:
print('Yes,you got it!')
elif guess_age > age:
print('think smaller')
else :
print('think bigger')
count +=1
else:
print('you have try too many times')
#! usr/bin/env python # encoding:utf-8 # __author__="Macal" ''' for i in range(0,10): if i < 5: print("loop",i) else: continue print('hehe') ''' for i in range(10): print('----------', i) for j in range(10): print(j) if j > 5: break #结束当前循环