How to split a string into equal lengths in Python

Python's method of dividing strings into equal lengths: 1. Split into groups of two, the code is [b=re.findall(r'.{2}',aa)]; 2. According to the fixed length To split a string into groups of three characters, the code is [re.findall(r'.{3}', string)].

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Python's method of dividing a string into equal lengths:

Method one:

Code example

#!/bin/python 
#site:WWW.jb51.net
# 
A = open('mac.txt','r') 
a = A.readlines() 
for aa in a: 
 b = list(aa.strip()) 
 c='' 
 for i in range(len(b)): 
  if i !=0: 
   if i%2 == 0: 
    c=c+'-'+b[i] 
   else: 
    c=c+b[i] 
  else: 
   c=c+b[i] 
 print c 
A.close()

Method two:

Code Example

#!/bin/python 
# 
import re 
A = open('mac.txt','r') 
a = A.readlines() 
for aa in a: 
 b=re.findall(r'.{2}',aa) 
 c='-'.join(b) 
 print c 
A.close()

is implemented using regular expressions in python, which has high execution efficiency and is worth recommending.

Processing result:

50-E5-49-E3-2E-CB

90-2B-34-13-EF-A6

50-E5-49-EC-BA-1C

90-2B-34-57-B1-6F

1C-6F-65-29-6D-F9

90-2B-34-13-1A-14

50-E5-49-E3-E2-F8

##50-E5-49-3A-26-96

90-2B-34-5F-B0-21

90-2B-34-13-15-74

90-2B-34-18-43-BF

00-24-1D-0E-25-8D

Python splits the string into groups of three characters according to a fixed length

def cut_text(text,lenth): 
 textArr = re.findall('.{'+str(lenth)+'}', text) 
 textArr.append(text[(len(textArr)*lenth):]) 
 return textArr 
  
print(cut_text('123456789abcdefg',3)) 
  
['123', '456', '789', 'abc', 'def', 'g']

>>> import re
>>> string = '123456789abcdefg'
>>> re.findall(r'.{3}', string)
['123', '456', '789', 'abc', 'def']
>>>

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