字符串清洗

a = "bbbbaacbaaaccc"
 b = a.strip("bc")
 aacbaaa

a = "bbbb\taaaaa\tccc"
 b = a.replace('\t', '')
 bbbbaaaaaccc

import re
 a = "bbbb\taa\n\taaa\tc\rcc"
 b = re.sub('[\t\r\n]', '', a)
 bbbbaaaaaccc

• 字符串stanslate()方法，可以同时删除多种不同字符
  bytearray.maketrans()、bytes.maketrans()、str.maketrans()， translate()
  ​​str.maketrans(a, b)​​

s = 'abc2222xyz'
 a = str.maketrans('2', '4')
 print(s.translate(a))
 abc4444xyz

​​bytes.maketrans()​​

s = b'123dddddxyz'
    a = bytes.maketrans(b'123', b'ABC')
    n = s.translate(a)
    print(n.decode()
    ABCdddddxyz

• 删除字符串​​translate(),​​ bytes类型

s = '123dddddxyz'
 b = s.encode()
 c = b.translate(None, b'123xyz')
 print(c.decode())
 ddddd

s = b'123\txyrz\r'
 b = bytes.maketrans(b'123', b'ABC')
 ns = s.translate(b, b'\t\r')
 print(ns.decode())
 ABCxyrz