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NumPy: Count a given word in each row of a array of string values

NumPy String: Exercise-21 with Solution

Write a NumPy program to count a given word in each row of a given array of string values.

Sample Solution:

Python Code:

import numpy as np 

str1 = np.array([['Python','NumPy','Exercises'],
                 ['Python','Pandas','Exercises'],
                 ['Python','Machine learning','Python']])
print("Original array of string values:") 
print(str1)
print("\nCount 'Python' row wise in the above array of string values:")
print(np.char.count(str1, 'Python'))

Sample Output:

Original array of string values:
[['Python' 'NumPy' 'Exercises']
 ['Python' 'Pandas' 'Exercises']
 ['Python' 'Machine learning' 'Python']]

Count 'Python' row wise in the above array of string values:
[[1 0 0]
 [1 0 0]
 [1 0 1]]

Python Code Editor:

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Python: Tips of the Day

Creates a dictionary with the same keys as the provided dictionary and values generated by running the provided function for each value:

Example:

def tips_map_values(obj, fn):
  ret = {}
  for key in obj.keys():
    ret[key] = fn(obj[key])
  return ret
users = {
  'Owen': { 'user': 'Owen', 'age': 29 },
  'Eddie': { 'user': 'Eddie', 'age': 15 }
}

print(tips_map_values(users, lambda u : u['age'])) # {'Owen': 29, 'Eddie': 15}

Output:

{'Owen': 29, 'Eddie': 15}