What is the best way to split a list within a list?

I'm trying to display the list in a matrix format, but I'm struggling with line breaks. How can I achieve this without using numpy? I attempted using join method, but it didn't work.

Here is the data provided (txt file):

ControlPoint Longitude Latitude

A 30 0

B 60 0

C 60 -30

D 30 -30

import math

Coordi = []    
with open('2432004k_coordi_new.txt') as C:
    for item in C:
        Coordi.append([i for i in item.split()])
        Coordi = Coordi.join("\n")

print ("Coordi=")
print Coordi

Coordi =

[[ 30.   0.]

 [ 60.   0.]

 [ 60. -30.]

 [ 30. -30.]]
python

Answer №1

If you're looking for a customized print format without relying on numpy, consider creating your own printing function. Here's an example of how it could be done:

def prettyprint(matrix):
    print("[", matrix[0])
    index = 1
    while index < len(matrix) - 1:
        print(" ", matrix[index])
        index += 1
    print(" ", matrix[index], "]")

You can then use this function to print your matrix.

For more detailed formatting within the matrix, you can iterate over each row and define how each value should be displayed. Here's a suggestion:

print("[", end="")
for value in row:
    print(value, " ", end="")  # prevent new line character from being printed
print("]", end="")

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