﻿ Python: Count lowercase letters in a list of words

# Python Exercises: Count lowercase letters in a list of words

## Python List: Exercise - 274 with Solution

Write a Python program to count the lowercase letters in a given list of words.

In the Code tab is a function which is meant to return how many uppercase letters there are in a list of various words. Fix the list comprehension so that the code functions normally!.

Sample Data:
(["Red", "Green", "Blue", "White"]) -> 13
(["SQL", "C++", "C"]) -> 0

Sample Solution-1:

Python Code:

``````def test(text):
return sum([el.islower() for word in text for el in word])
text = ["Red", "Green", "Blue", "White"]
print("Original list of words:", text)
print("Count the lowercase letters in the said list of words:")
print(test(text))
text = ["SQL", "C++", "C"]
print("Original list of words:", text)
print("Count the lowercase letters in the said list of words:")
print(test(text))
```
```

Sample Output:

```Original list of words: ['Red', 'Green', 'Blue', 'White']
Count the lowercase letters in the said list of words:
13
Original list of words: ['SQL', 'C++', 'C']
Count the lowercase letters in the said list of words:
0
```

Flowchart:

## Visualize Python code execution:

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

Sample Solution-2:

Python Code:

``````def test(text):
return sum(map(str.islower, str(text)))
text = ["Red", "Green", "Blue", "White"]
print("Original list of words:", text)
print("Count the lowercase letters in the said list of words:")
print(test(text))
text = ["SQL", "C++", "C"]
print("Original list of words:", text)
print("Count the lowercase letters in the said list of words:")
print(test(text))
```
```

Sample Output:

```Original list of words: ['Red', 'Green', 'Blue', 'White']
Count the lowercase letters in the said list of words:
13
Original list of words: ['SQL', 'C++', 'C']
Count the lowercase letters in the said list of words:
0
```

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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Previous Python Exercise: Divide a list of integers with the same sum value.
Next Python Exercise: Sum of all list elements except current element.

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## Python: Tips of the Day

Returns True if the provided function returns True for every element in the list, False otherwise:

Example:

```def tips_every(lst, fn=lambda x: x):
return all(map(fn, lst))

print(tips_every([2, 4, 3], lambda x: x > 1))
print(tips_every([1, 2, 3]))
```

Output:

```True
True
```