I have an array in Python made up of arrays. But these arrays can have different sizes. For example:
matriz = [[1,2,3],[4,5,6,7],[1,2,3,4,5,6]]
What I want to know is if there is a medium (some python-ready function) that returns the size of the largest array in that array.
For example:
x = funcao(matriz)
which would return to x the value 6 (array size at array position 3).
You can iterate through your array by creating a generator and using a len() to get the size of each element, like this: gen = (len(x) for x in matriz) and then use the max() function to get the largest element of the generator.
Example:
matriz = [[1,2,3],[4,5,6,7],[1,2,3,4,5,6]]
gen = (len(x) for x in matriz)
print(type(gen))
print(max(gen))
Output:
<class 'generator'>
6
See working at ideone
Other version:
max(map(len,matriz))
Use max:
matriz = [[1,2,3],[4,5,6,7],[1,2,3,4,5,6]]
len_maior = len(max(matriz, key=len)) # tamanho da maior sublista, 6
max(matriz, key=len) will return the highest sublist ( [1,2,3,4,5,6] ), based on its len (size), then we will actually 'measure it' and know its size ( len([1,2,3,4,5,6]) ), which is 6 in this case