Shape of 2d list python
The length of 2d array in python is the number of rows in it. Generally 2d array has rows with same number of elements in it. Show
Number of rows in 2d arrayUse len(arr) to find the number of row from 2d array. To find the number columns use len(arr[0]). Now total number of elements is rows * columns. Example: Consider a 2d array arr = [[20,30,40], [50,60,70]]. Program: array = [[100,200,300], [400,500,600]] #get the number of rows rows = len(array) #get the number of columns cols = len(array[0]) print('Length is', rows) print('Number of columns', cols) print('Total number of elements', rows * cols) Output: Length is 2 Number of columns 3 Total number of elements 6 Find length of 2d array using numpyTo find the length of 2d array we can use numpy.shape. This function returns number of rows and columns. Program: import numpy as numpy arr_representation = numpy.array([[60, 70],[80, 90],[100, 200]]) print('Number of (rows,cols)', numpy.shape(arr_representation)) Output: Number of (rows,cols) (3, 2) A two-dimensional array can be represented by a list of lists using the Python built-in Here are some ways to swap the rows and columns of this two-dimensional list.
It is easier to use NumPy and pandas, but if you don't want to import NumPy or pandas just for transposition, you
can use the The original two-dimensional list is defined as follows:
Convert to numpy.ndarray and transpose with TCreate a NumPy array If you want a
In addition to the
Convert to pandas.DataFrame and transpose with TCreate If you want a
Transpose with built-in function zip()You can transpose a two-dimensional list using the built-in function
In addition, use
Elements are
The detail is as follows. The elements of the list are expanded with
How do you find the shape of a 2D list?code to find the shape of the 2d list in python. from numpy import array.. l = [[2, 3], [4, 2], [3, 2]]. a = array(l). print a. shape.. What is the shape of a list Python?The shape of a list will be obtained using a built-in function len() and a module NumPy. The shape of a list normally returns the number of objects in a list. We can calculate a shape of a list using two methods, len() and NumPy array shape. Numpy has an attribute named np.
How do you print the shape of a 2D array in Python?Use the correct NumPy syntax to check the shape of an array. arr = np. array([1, 2, 3, 4, 5]) print(arr. )
Can a list be 2 dimensional Python?Python provides many ways to create 2-dimensional lists/arrays. However one must know the differences between these ways because they can create complications in code that can be very difficult to trace out.
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