字符串操作、文件操作，英文词频统计预处理

作业来源：https://edu.cnblogs.com/campus/gzcc/GZCC-16SE1/homework/2684

1.字符串操作：

  • 解析身份证号：生日、性别、出生地等。
id = input("请输入身份证号码：")
shengfen = id[0:2]
nian = id[6:10]
yue = id[10:12]
ri = id[12:14]
diqu={\'北京\': 11, \'上海\': 31, \'湖北\': 42, \'云南\': 53,
      \'天津\': 12, \'江苏\': 32, \'湖南\': 43, \'西藏\': 54,
      \'河北\': 13, \'浙江\': 33, \'广东\': 44, \'陕西\': 61,
      \'山西\': 14, \'安徽\': 34, \'广西\': 45, \'甘肃\': 62,
      \'内蒙\': 15, \'福建\': 35, \'海南\': 46, \'青海\': 63,
      \'辽宁\': 21, \'江西\': 36, \'重庆\': 50, \'宁夏\': 64,
      \'吉林\': 22, \'山东\': 37, \'四川\': 51, \'新疆\': 65,
      \'黑龙江\': 23, \'河南\': 41, \'贵州\': 52, \'新疆兵团\': 66,
      \'台湾\': 71, \'香港\': 81, \'澳门\': 91}
for key in diqu:
    if shengfen == str(diqu[key]):
        shengfen = key
print("解析如下:")
print(\'籍贯：\'+shengfen)
print("出生日期："+nian+"年"+yue+"月"+ri+"日")
if (int(id[-2]) % 2) == 0:
    print("性别：女性")
else:
    print("性别：男性")

 

  • 凯撒密码编码与解码

　　加密：

from idna import unichr

def Du():
    XinXi = open(r"..\bd\venv\Password\monkey.txt", \'r\', encoding=\'utf8\')
    JiaMi = XinXi.read()
    XinXi.close()
    return JiaMi

def Xie():
    XinXi = open(r"..\bd\venv\Password\monkey.txt", \'w\', encoding=\'utf8\')
    XinXi.write(JiaMi)
    XinXi.close()

JiaMi = Du()

def JM(b):

    c = \'\'
    for i in b:
        c += unichr(ord(i) + 3)
        # print(unichr(ord(i)+3))
    b = c
    return b
print("加密前："+JiaMi)

JiaMi = JM(JiaMi)

print("加密后："+JiaMi)

Xie()

　　解密：

from idna import unichr

XinXi = open(r"..\bd\venv\Password\monkey.txt",\'r+\',encoding=\'utf8\')
JieMi = XinXi.read()
c=\'\'
for i in JieMi:
    c+=unichr(ord(i)-3)
    #print(unichr(ord(i)+3))
print("解密前："+JieMi)
JieMi=c
XinXi.seek(0)
XinXi.truncate()
print("解密后："+JieMi)
XinXi.write(JieMi)
XinXi.close()

 

  • 网址观察与批量生成
for i in range(1,16):
  print(\'http://news.gzcc.cn/html/xiaoyuanxinwen/{}.html\'.format(i))

2.英文词频统计预处理

  • 下载一首英文的歌词或文章或小说。
  • 将所有大写转换为小写
  • 将所有其他做分隔符（,.？！）替换为空格
  • 分隔出一个一个的单词
  • 并统计单词出现的次数。
XinXi = open(r"..\bd\venv\GeCi\geci.txt",\'r+\',encoding=\'utf8\')
GeCi= XinXi.read()
XinXi.close()

GeCi_ist = GeCi.replace(\'\n\', \' \').replace(\',\', \' \').replace(\'(\', \' \').replace(\')\', \' \').lower().split(\' \')
ZiDian = { }
for str in GeCi_ist:
    if str in ZiDian.keys():
        ZiDian[str] = ZiDian[str] + 1
    else:
        ZiDian[str] = 1

del ZiDian[\'\']
print(sorted(ZiDian.items(),key=lambda x:x[1],reverse=True))

 

3.文件操作

  • 同一目录、绝对路径、相对路径
open(r"..\bd\venv\GeCi\geci.txt",\'r+\',encoding=\'utf8\')
  • 凯撒密码：从文件读入密函，进行加密或解密，保存到文件。
from idna import unichr

XinXi = open(r"..\bd\venv\Password\monkey.txt",\'r+\',encoding=\'utf8\')
JieMi = XinXi.read()
c=\'\'
for i in JieMi:
    c+=unichr(ord(i)-3)
    #print(unichr(ord(i)+3))
print("解密前："+JieMi)
JieMi=c
XinXi.seek(0)
XinXi.truncate()
print("解密后："+JieMi)
XinXi.write(JieMi)
XinXi.close()

 

  • 词频统计：下载一首英文的歌词或文章或小说，保存为utf8文件。从文件读入文本进行处理。
XinXi = open(r"..\bd\venv\GeCi\geci.txt",\'r+\',encoding=\'utf8\')
GeCi= XinXi.read()
XinXi.close()

GeCi_ist = GeCi.replace(\'\n\', \' \').replace(\',\', \' \').replace(\'(\', \' \').replace(\')\', \' \').lower().split(\' \')
ZiDian = { }
for str in GeCi_ist:
    if str in ZiDian.keys():
        ZiDian[str] = ZiDian[str] + 1
    else:
        ZiDian[str] = 1
del ZiDian[\'\']
print(sorted(ZiDian.items(),key=lambda x:x[1],reverse=True))

 

 4.函数定义

  • 加密函数
def JiaM(b):

    c = \'\'
    for i in b:
        c += unichr(ord(i) + 3)
        # print(unichr(ord(i)+3))
    b = c
    return b

 

  • 解密函数
def JieM(b):

    c = \'\'
    for i in b:
        c += unichr(ord(i) - 3)
        # print(unichr(ord(i)-3))
    b = c
    return b

 

  • 读文本函数
def Du():
    XinXi = open(r"..\bd\venv\Password\monkey.txt", \'r\', encoding=\'utf8\')
    JiaMi = XinXi.read()
    XinXi.close()
    return JiaMi

 

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