擅长:python、mysql、java
<p>String是python中的一个序列,可以对其进行迭代。在</p>
<p>其次,由于字符串是不可变的,因此<code>str.replace</code>不修改<code>a</code>,它只返回一个新的字符串。在</p>
<pre><code>a = "g fmnc wms bgblr rpylqjyrc gr zw fylb. rfyrq ufyr amknsrcpq ypc dmp. bmgle gr gl zw fylb gq glcddgagclr ylb rfyr'q ufw rfgq rcvr gq qm jmle. sqgle qrpgle.kyicrpylq() gq pcamkkclbcb. lmu ynnjw ml rfc spj."
for char in a:
if char == "k":
a = a.replace("k", "m") #assign the new string back to `a`
elif char == "o":
a = a.replace("o", "q")
elif char == "e":
a = a.replace("e", "g")
print a
</code></pre>