请用自己目前所学实现字符串大写转小写,小写变大写,并且将字符串变为镜像字符串。例如:’A’变为’Z’,’b’变为’y
示范字符串:
”sdSdsfdAdsdsdfsfdsdASDSDFDSFa”字符串大写变小写 小写变大写,然后最后变为镜像字符串。
Python13期 前来报道!!!
请用自己目前所学实现字符串大写转小写,小写变大写,并且将字符串变为镜像字符串。例如:’A’变为’Z’,’b’变为’y
示范字符串:
”sdSdsfdAdsdsdfsfdsdASDSDFDSFa”字符串大写变小写 小写变大写,然后最后变为镜像字符串。
Python13期 前来报道!!!
#!/usr/bin/python3
# -*- coding: utf-8 -*-
# @Time :2018/12/1 11:52
# @Author :Yosef
# E-mail :wurz529@foxmail.com
# File :homework.py
# Software :PyCharm Community Edition
a = "sdSdsfdAdsdsdfsfdsdASDSDFDSFa"
"""
1. 字符串大写变小写
2. 小写变大写
"""
b=''
for i in a:
if i.islower():
b += i.upper()
else:
b += i.lower()
print(b) # 完成大小写互换
'''
3. 转换镜像。 a-z A-Z
'''
lower = "abcdefghijklmnopqrstuvwxyz"
upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
mirror=""
for i in b:
if lower.find(i)!=-1:
index = lower.find(i)
mirror += lower[25-index]
elif upper.find(i)!=-1:
index = upper.find(i)
mirror += upper[25-index]
print(mirror)
关于第一部分的大小写转换也可以使用swapcase();
运行结果:
a = 'sdSdsfdAdsdsdfsfdsdASDSDFDSFa'
first=''
for i in a:
if i.islower():
first = first + i.upper()
else:
first = first + i.lower()
last=''
for i in a:
if i.islower():
last=last+chr(219 - ord(i))
else:
last = last + chr(155 - ord(i))
print (first)
print(last)
s="sdSdsfdAdsdsdfsfdsdASDSDFDSFa"
print(s.upper())
print(s.lower())
print(s.swapcase())
print("替换前:",s)
s_1=s.replace('s','h')
s_2=s_1.replace('S','H')
s_3=s_2.replace('f','u')
s_4=s_3.replace('A','Z')
s_5=s_4.replace('D','W')
s_6=s_5.replace('F','U')
s_7=s_6.replace('d','w')
s_8=s_7.replace('a','z')
print("替换后:",s_8)
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