CODEWITHSUNDEEP
python-3.x
A Tsang
A Tsang

Reputation: 85

how do you remove () and commas from a list of tuples

Recently I developed a program that takes a list of numbers and finds the biggest number out of them that is divisible by 3. It work however I don't understand how you change it to a normal list. Here is an example: I have

[(3, 3, 4), (3, 4, 3), (3, 3, 4)]

I would like to have 

[334,343,334]

Thanks for the help

Following on from the great help I am receiving an unusual error to do with tuples Once again thanks for the help here it is;

import intercools 
list1 = []
stuff = [1, 2, 3]
for L in range(0, len(stuff+1):
    for subset in itertools.combinations(stuff, L):
         list1.append(subset) 
print(list1) 
sep = [map(str,l)for l in list1]
nl = [int(''.join(s)) for s in sep]
print(nl)

Upvotes: 0

Views: 2199

Answers (4)

Chiheb Nexus
Chiheb Nexus

Reputation: 9257

You can do it with literal_eval from ast module like this way:

from ast import literal_eval 

a = [(3, 3, 4), (3, 4, 3), (3, 3, 4)]
b = [literal_eval("".join(str(j) for j in k)) for k in a]
print(b)

Output:

[334, 343, 334]

Also you can do it like this way:

a = [(3, 3, 4), (3, 4, 3), (3, 3, 4)]
b = [int("".join(str(j) for j in k)) for k in a]

Also, you can use map method to do it:

a = [(3, 3, 4), (3, 4, 3), (3, 3, 4)]
# Or using literal_eval
b = [int("".join(map(str, k))) for k in a]

Upvotes: 0

dawg
dawg

Reputation: 103814

Given:

>>> LoT=[(3, 3, 4), (3, 4, 3), (3, 3, 4)]

You can use a string to join the tuple elements together then recast to an int:

>>> [int(''.join(map(str, t))) for t in LoT]
[334, 343, 334]

Upvotes: 1

chickity china chinese chicken
chickity china chinese chicken

Reputation: 8047

And yet another:

ml = [(3, 3, 4), (3, 4, 3), (3, 3, 4)] 

sep = [map(str,l) for l in ml]

nl = [int(''.join(s)) for s in sep]

print(nl) # [334, 343, 334]

Upvotes: 1

m_callens
m_callens

Reputation: 6360

List comprehensions in Python are your friend.

t = [(3, 3, 4), (3, 4, 3), (3, 3, 4)]
str_tuple = [(str(x), str(y), str(y)) for (x, y, z) in t]
final = [int(''.join(x)) for x in str_tuple]
# [334, 343, 334]

Upvotes: 0

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