擅长:python、mysql、java
<p>你想要的是地图,或者字典。它的密钥是用户名,其内容是该用户名的密码。</p>
<pre><code>users = {} # this is the mapping
users["joe"] = "123" # it currently contains username "joe" with password "123"
...
username = raw_input("What is your username? ")
password = raw_input("What is your password? ")
if username in users.keys():
expected_password = users[username]
if expected_password == password:
print "Welcome to Telemology,", username
else:
print "Didn't you forget your password,", username
else:
print "Unknown user"
</code></pre>
<p>当然,在一个真正的系统中,你会存储经过加密的密码。</p>