Question

Solve each of the following exercises from Think Python by using Pandas vectorized operations (not for loops). Focus on writing a function to solve each problem; You should call that function in your unit tests, and you may also want to call it in your programs __main__ block, possibly accepting arguments from the command-line.

1. Write a program that reads words.txt and prints only the words with more than 20 characters (not counting whitespace).

Answer 1

To use Pandas to print words with more than 20 characters from 'words.txt', we import Pandas, read the file into a Series, and implement a vectorized string length comparison to filter and print the long words.

Step-by-step explanation:

To solve the problem of reading words.txt and printing words that have more than 20 characters using Pandas vectorized operations, we'll write a function that leverages the Pandas library's efficiency. First, we need to import Pandas and read the text file into a pandas Series. Once loaded, we use a vectorized string operation to filter out words based on length and print them.

Example Code

Here is a Python function that performs the required operation:

import pandas as pd
def find_long_words(file_path):
# Read the file into a Series
words = pd.read_csv(file_path, header=None, squeeze=True)
# Vectorized operation to find words longer than 20 characters
long_words = words[words.str.len() > 20]
print(long_words)

To use this function, simply call find_long_words('words.txt') within your __main__ block or from the command line with the appropriate file path.