![python 密码输入显示星号_[145]python实现控制台密码星号输入](https://900zi.500zi.com/uploadfile/img/15/714/7e0f6e0ebaaf65f8b3d7bf19f101292d.jpg)
import msvcrt, sys, os
print('password: ', end='', flush=True)
li = []
while 1:
ch = msvcrt.getch()
#回车
if ch == b'\r':
msvcrt.putch(b'\n')
print('输入的密码是：%s' % b''.join(li).decode())
break
#退格
elif ch == b'\x08':
if li:
li.pop()
msvcrt.putch(b'\b')
msvcrt.putch(b' ')
msvcrt.putch(b'\b')
#Esc
elif ch == b'\x1b':
break
else:
li.append(ch)
msvcrt.putch(b'*')
os.system('pause')
示例
一、raw_input()或input()：
for python 2.x
[root@master test]# /usr/local/python2.7/bin/python test.py
Please input your password:123
your password is 123
[root@master test]# cat test.py
#!/usr/bin/python
# -*- coding=utf-8 -*-
#for python 2.x
#input = raw_input("Please input your password:")
#print "your password is %s" %input
for python 3.x
[root@master test]# /usr/local/python3.4/bin/python3 test.py
Please input your password:123
your password is 123
[root@master test]# cat test.py
#!/usr/bin/python
# -*- coding=utf-8 -*-
#for python 3.x
input = input("Please input your password:")
print ("your password is %s" %input)
Note：这种方法最简单，但是不安全，很容易暴露密码。
二、getpass.getpass()：
for python 2.x
[root@master test]# /usr/local/python2.7/bin/python test.py
Please input your password:
your password is 123
[root@master test]# cat test.py
#!/usr/bin/python
# -*- coding=utf-8 -*-
import getpass
#for python 2.x
input = getpass.getpass("Please input your password:")
print "your password is %s" %input
for python 3.x
[root@master test]# /usr/local/python3.4/bin/python3 test.py
Please input your password:
your password is 123
[root@master test]# cat test.py
#!/usr/bin/python
# -*- coding=utf-8 -*-
import getpass
#for python 3.x
input = getpass.getpass("Please input your password:")
print ("your password is %s" %input)
Note：这种方法很安全，但是看不到输入的位数，让人看着有点不太习惯，而且没有退格效果。
三、termios：
for python 2.x
[root@master test]# /usr/local/python2.7/bin/python test.py
Enter your password:***
your password is 123
[root@master test]# cat test.py
#!/usr/bin/python
# -*- coding=utf-8 -*-
import sys, tty, termios
#for python 2.x
def getch():
fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(sys.stdin.fileno())
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
return ch
def getpass(maskchar = "*"):
password = ""
while True:
ch = getch()
if ch == "\r" or ch == "\n":
return password
elif ch == "\b" or ord(ch) == 127:
if len(password) > 0:
sys.stdout.write("\b \b")
password = password[:-1]
else:
if maskchar != None:
sys.stdout.write(maskchar)
password += ch
if __name__ == "__main__":
print "Enter your password:",
password = getpass("*")
print "your password is %s" %password
for python 3.x
[root@master test]# /usr/local/python3.4/bin/python3 test.py
Enter your password:
***your password is 123
[root@master test]# cat test.py
#!/usr/bin/python
# -*- coding=utf-8 -*-
import sys, tty, termios
#for python 3.x
def getch():
fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(sys.stdin.fileno())
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
return ch
def getpass(maskchar = "*"):
password = ""
while True:
ch = getch()
if ch == "\r" or ch == "\n":
return password
elif ch == "\b" or ord(ch) == 127:
if len(password) > 0:
sys.stdout.write("\b \b")
password = password[:-1]
else:
if maskchar != None:
sys.stdout.write(maskchar)
password += ch
if __name__ == "__main__":
print ("Enter your password:",)
password = getpass("*")
print ("your password is %s" %password)
Note：这种方法可以实现输入显示星号，而且还有退格功能，该方法仅在Linux上使用。
四、msvcrt.getch()
F:\Python\Alex\s12\zhulh>python test.py
Please input your password:
***
your password is:123
#!/usr/bin/python
# -*- coding=utf-8 -*-
import msvcrt,sys
def pwd_input():
chars = []
while True:
try:
newChar = msvcrt.getch().decode(encoding="utf-8")
except:
return input("你很可能不是在cmd命令行下运行，密码输入将不能隐藏:")
if newChar in '\r\n': # 如果是换行，则输入结束
break
elif newChar == '\b': # 如果是退格，则删除密码末尾一位并且删除一个星号
if chars:
del chars[-1]
msvcrt.putch('\b'.encode(encoding='utf-8')) # 光标回退一格
msvcrt.putch( ' '.encode(encoding='utf-8')) # 输出一个空格覆盖原来的星号
msvcrt.putch('\b'.encode(encoding='utf-8')) # 光标回退一格准备接受新的输入
else:
chars.append(newChar)
msvcrt.putch('*'.encode(encoding='utf-8')) # 显示为星号
return (''.join(chars) )
print("Please input your password:")
pwd = pwd_input()
print("\nyour password is:{0}".format(pwd))
sys.exit()
Note：这种方法可以实现输入显示星号，而且还有退格功能，该方法仅在Windows上使用。
在这里提供shell实现的输入密码显示星号的方法：
[root@master test]# sh ./passwd.sh
Please input your passwd: ***
Your password is: 123
[root@master test]# cat passwd.sh
#!/bin/sh
getchar() {
stty cbreak -echo
dd if=/dev/tty bs=1 count=1 2> /dev/null
stty -cbreak echo
}
printf "Please input your passwd: "
while : ; do
ret=`getchar`
if [ x$ret = x ]; then
echo
break
fi
str="$str$ret"
printf "*"
done
echo "Your password is: $str"
这里还有一个获取跨平台按键的例子：
class _Getch:
"""Gets a single character from standard input. Does not echo to the screen."""
def __init__(self):
try:
self.impl = _GetchWindows()
except ImportError:
try:
self.impl = _GetchMacCarbon()
except AttributeError:
self.impl = _GetchUnix()
def __call__(self): return self.impl()
class _GetchUnix:
def __init__(self):
import tty, sys, termios # import termios now or else you'll get the Unix version on the Mac
def __call__(self):
import sys, tty, termios
fd = sys.stdin.fileno()
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(sys.stdin.fileno())
ch = sys.stdin.read(1)
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
return ch
class _GetchWindows:
def __init__(self):
import msvcrt
def __call__(self):
import msvcrt
return msvcrt.getch()
class _GetchMacCarbon:
"""
A function which returns the current ASCII key that is down;
if no ASCII key is down, the null string is returned. The
page /macintosh-c/chap02-1.html was
very helpful in figuring out how to do this.
"""
def __init__(self):
import Carbon
Carbon.Evt #see if it has this (in Unix, it doesn't)
def __call__(self):
import Carbon
if Carbon.Evt.EventAvail(0x0008)[0]==0: # 0x0008 is the keyDownMask
return ''
else:
#
# The event contains the following info:
# (what,msg,when,where,mod)=Carbon.Evt.GetNextEvent(0x0008)[1]
#
# The message (msg) contains the ASCII char which is
# extracted with the 0x000000FF charCodeMask; this
# number is converted to an ASCII character with chr() and
# returned
#
(what,msg,when,where,mod)=Carbon.Evt.GetNextEvent(0x0008)[1]
return chr(msg & 0x000000FF)
if __name__ == '__main__': # a little test
print 'Press a key'
inkey = _Getch()
import sys
for i in xrange(sys.maxint):
k=inkey()
if k<>'':break
print 'you pressed ',k
参考：/Richardzhu/p/5162289.html
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