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Python program to convert a list of strings with a delimiter to a list of tuple

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  • Last Updated : 01 Oct, 2020

Given a List containing strings with a particular delimiter. The task is to remove the delimiter and convert the string to the list of tuple.

Examples:

Input : test_list = [“1-2”, “3-4-8-9”], K = “-” 
Output : [(1, 2), (3, 4, 8, 9)] 
Explanation : After splitting, 1-2 => (1, 2).
 

Input : test_list = [“1*2”, “3*4*8*9”], K = “*” 
Output : [(1, 2), (3, 4, 8, 9)] 
Explanation : After splitting, 1*2 => (1, 2). 

Method #1 : Using list comprehension + split()

In this, first, each string is split using split() with K as an argument, then this is extended to all the Strings using list comprehension.

Python3




# Python3 code to demonstrate working of
# Convert K delim Strings to Integer Tuple List
# Using list comprehension + split()
  
# initializing list
test_list = ["1-2", "3-4-8-9", "4-10-4"]
  
# printing original list
print("The original list is : " + str(test_list))
  
# initializing K
K = "-"
  
# conversion using split and list comprehension
# int() is used for conversion
res = [tuple(int(ele) for ele in sub.split(K)) for sub in test_list]
  
# printing result
print("The converted tuple list : " + str(res))


Output

The original list is : ['1-2', '3-4-8-9', '4-10-4']
The converted tuple list : [(1, 2), (3, 4, 8, 9), (4, 10, 4)]

Method #2 : Using map() + split() + list comprehension

In this, the task of extension of integral extension logic is done using map() and then list comprehension is used to perform the task of construction of the list.

Python3




# Python3 code to demonstrate working of
# Convert K delim Strings to Integer Tuple List
# Using map() + split() + list comprehension
  
# initializing list
test_list = ["1-2", "3-4-8-9", "4-10-4"]
  
# printing original list
print("The original list is : " + str(test_list))
  
# initializing K
K = "-"
  
# extension logic using map()
# int() is used for conversion
res = [tuple(map(int, sub.split(K))) for sub in test_list]
  
# printing result
print("The converted tuple list : " + str(res))


Output

The original list is : ['1-2', '3-4-8-9', '4-10-4']
The converted tuple list : [(1, 2), (3, 4, 8, 9), (4, 10, 4)]

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