﻿ Python: Count the number of sublists contain a particular element - w3resource

# Python: Count the number of sublists contain a particular element

## Python List: Exercise - 93 with Solution

Write a Python program to count the number of sublists that contain a particular element.

Sample Solution:

Python Code:

``````def count_element_in_list(input_list, x):
ctr = 0
for i in range(len(input_list)):
if x in input_list[i]:
ctr+= 1

return ctr

list1 = [[1, 3], [5, 7], [1, 11], [1, 15, 7]]
print("Original list:")
print(list1)
print("\nCount 1 in the said list:")
print(count_element_in_list(list1, 1))
print("\nCount 7 in the said list:")
print(count_element_in_list(list1, 7))

list1 = [['A', 'B'], ['A', 'C'], ['A', 'D', 'E'], ['B', 'C', 'D']]
print("\nOriginal list:")
print(list1)
print("\nCount 'A' in the said list:")
print(count_element_in_list(list1, 'A'))
print("\nCount 'E' in the said list:")
print(count_element_in_list(list1, 'E'))
```
```

Sample Output:

```Original list:
[[1, 3], [5, 7], [1, 11], [1, 15, 7]]

Count 1 in the said list:
3

Count 7 in the said list:
2

Original list:
[['A', 'B'], ['A', 'C'], ['A', 'D', 'E'], ['B', 'C', 'D']]

Count 'A' in the said list:
3

Count 'E' in the said list:
1
```

Pictorial Presentation: Flowchart: ## Visualize Python code execution:

The following tool visualize what the computer is doing step-by-step as it executes the said program:

Python Code Editor:

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## Python: Tips of the Day

Given a predicate function, fn, and a prop string, this curried function will then take an object to inspect by calling the property and passing it to the predicate:

Example:

```def tips_check_prop(fn, prop):
return lambda obj: fn(obj[prop])
check_age = tips_check_prop(lambda x: x >= 25, 'age')
user = {'name': 'Owen', 'age': 25}

print(check_age(user))
```

Output:

```True
```

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