Python | Ways to split strings on Uppercase characters

Given a string, write a Python program to split strings on Uppercase characters. Let’s discuss a few methods to solve the problem.

Method #1: Using re.findall() method

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# Python code to demonstrate 
# to split strings
# on uppercase letter
  
import re
  
# Initialising string
ini_str = 'GeeksForGeeks'
  
# Printing Initial string
print ("Initial String", ini_str)
  
# Splitting on UpperCase using re
res_list = []
res_list = re.findall('[A-Z][^A-Z]*', ini_str)
  
# Printing result
print("Resultant prefix", str(res_list))

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Output:



Initial String GeeksForGeeks
Resultant prefix ['Geeks', 'For', 'Geeks']

Method #2: Using re.split()

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# Python code to demonstrate 
# to split strings
# on uppercase letter
  
import re
  
# Initialising string
ini_str = 'GeeksForGeeks'
  
# Printing Initial string
print ("Initial String", ini_str)
  
# Splitting on UpperCase using re
res_list = [s for s in re.split("([A-Z][^A-Z]*)", ini_str) if s]
  
# Printing result
print("Resultant prefix", str(res_list))

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Output:

Initial String GeeksForGeeks
Resultant prefix ['Geeks', 'For', 'Geeks']

 
Method #3: Using enumerate

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# Python code to demonstrate 
# to split strings
# on uppercase letter
  
# Initialising string
ini_str = 'GeeksForGeeks'
  
# Printing Initial string
print ("Initial String", ini_str)
  
# Splitting on UpperCase using re
res_pos = [i for i, e in enumerate(ini_str+'A') if e.isupper()]
res_list = [ini_str[res_pos[j]:res_pos[j + 1]]
            for j in range(len(res_pos)-1)]
  
# Printing result
print("Resultant prefix", str(res_list))

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Output:

Initial String GeeksForGeeks
Resultant prefix ['Geeks', 'For', 'Geeks']


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