convert list of lists to list code example

Example 1: python flat list from list of list

flat_list = [item for sublist in l for item in sublist]

#which is equivalent to this 
flat_list = []
for sublist in l:
    for item in sublist:
        flat_list.append(item)

Example 2: flatten a list of lists python

flattened = [val for sublist in list_of_lists for val in sublist]

Example 3: python convert list of lists to array

# Basic syntax:
numpy.array(list_of_lists)

# Example usage:
import numpy as np
list_of_lists = [[1, 2, 3], [4, 5, 6]] # Create list of lists
your_array = np.array(list_of_lists) # Convert list of lists to array
your_array
--> array([[1, 2, 3],
           [4, 5, 6]])

Example 4: convert list of list to list python

merged = list(itertools.chain.from_iterable(list2d))