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Python | Chunk Tuples to N
  • Last Updated : 21 Nov, 2019

Sometimes, while working with data, we can have a problem in which we may need to perform chunking of tuples each of size N. This is popular in applications in which we need to supply data in chunks. Let’s discuss certain ways in which this task can be performed.

Method #1 : Using list comprehenion
This is brute and shorthand method to perform this task. In this, we split the N elements at a time and construct a new tuple for them.




# Python3 code to demonstrate working of
# Chunk Tuples to N
# using list comprehension
  
# initialize tuple
test_tup = (10, 4, 5, 6, 7, 6, 8, 3, 4)
  
# printing original tuple
print("The original tuple : " + str(test_tup))
  
# initialize N 
N = 3
  
# Chunk Tuples to N
# using list comprehension
res = [test_tup[i : i + N] for i in range(0, len(test_tup), N)]
  
# printing result
print("The tuples after chunking are : " + str(res))
Output :
The original tuple : (10, 4, 5, 6, 7, 6, 8, 3, 4)
The tuples after chunking are : [(10, 4, 5), (6, 7, 6), (8, 3, 4)]

 

Method #2 : Using zip() + iter()
The combination of above functions can also be used to solve this problem. In this, we use zip() to combine chunks and iter() converts to suitable format.






# Python3 code to demonstrate working of
# Chunk Tuples to N
# using zip() + iter()
  
# initialize tuple
test_tup = (10, 4, 5, 6, 7, 6, 8, 3, 4)
  
# printing original tuple
print("The original tuple : " + str(test_tup))
  
# initialize N 
N = 3
  
# Chunk Tuples to N
# using zip() + iter()
temp = [iter(test_tup)] * N
res = list(zip(*temp))
  
# printing result
print("The tuples after chunking are : " + str(res))
Output :
The original tuple : (10, 4, 5, 6, 7, 6, 8, 3, 4)
The tuples after chunking are : [(10, 4, 5), (6, 7, 6), (8, 3, 4)]

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