/Python/Python how to count items in array

Python how to count items in array

myArray = [1, 2, 3];
print(len(myArray));
#output
3

Source: stackoverflow.com

Count values in array python

a = numpy.array([0, 3, 0, 1, 0, 1, 2, 1, 0, 0, 0, 0, 1, 3, 4])
unique, counts = numpy.unique(a, return_counts=True)
dict(zip(unique, counts))

# {0: 7, 1: 4, 2: 1, 3: 2, 4: 1}

Source: stackoverflow.com

Python count of values in array

import numpy as np
y = np.array([0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1])
num_zeros = (y == 0).sum()
num_ones = (y == 1).sum()

Source: stackoverflow.com

Count how much a number is in an array python

# Our array
arr = [82, 49, 82, 82, 41, 82, 15, 63, 38, 25]

# let's print the number of 82 in our array/list
print(arr.count(82))

# it will print : 4

Similar codes

0 vote141 views1 answer
Pandas set one column equal to another
Python
0 vote128 views1 answer
Check if digit or alphabet
Python
0 vote121 views1 answer
How to plot stacked bar chart from grouped data pandas
Python
8 votes168 views3 answers
Python get dictionary keys as list
Python
1 vote125 views3 answers
Python count hex
Python
11 votes132 views2 answers
Python code to wait
Python
5 votes144 views4 answers
Debugging in python
Python
0 vote135 views1 answer
Dict comprehensions
Python
0 vote146 views1 answer
Detect operating system using python
Python
0 vote133 views1 answer
Python - join two columns and transform it as index
Python