Lab work:


Understanding str class methods: strip, split and re.split
Understanding how to open and read from a text file

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1. Predict the values and type of result and the value of sentence after these lines.  Then run them to check

sentence = ' Good morning, Skidmore!  It is going to be a great day.   '
result = sentence.strip()
print(f'>{sentence}<')
print(f'>{result}<')
print(type(sentence))
print(type(result))
print(len(result))

2. Predict the values and type of result and the value of sentence after these lines.  Then run them to check.

import re
sentence = ' Good morning, Skidmore!  It is going to be a great day.   '
sentence = sentence.strip()
result = re.split('[\s,!\.]', sentence)  # recall that \s is shorthand for whitespace (includes: space, newline, tab)
print(f'>{sentence}<')
print(f'>{result}<')
print(type(sentence))
print(type(result))
print(len(result))

# did you notice that there are empty strings as elements after doing the split?
# do you understand why?

3. Predict the values and type of result and the value of sentence after these lines.  Then run them to check.

sentence = 'Good morning, Skidmore!'
result = sentence.split()
print(f'>{sentence}<')
print(f'>{result}<')
print(type(sentence))
print(type(result))
print(len(result))

4.  Predict the values and type of result after these lines.  Then run them to check.
# note, use the data.txt file posted to the labs page.

with open('data.txt', 'r') as infile:
    result = infile.read()
    
print(f'>{result}<')
print(type(result))
print(len(result))


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5. Write a program that reads the words from a file (you can use mobydick-chap1.txt from classnotes page) and counts 
- the number of words that start with an uppercase letter
- the number of words that start with a lowercase letter
- the number of words that are longer than 9 letters

and outputs something like the following:

There are ___ capitalized words in ____.
There are ___ words that start with lowercase letter in ____.
There are ___ words of at least 10 letters in ____.

Think about whether you need to read the file line by line, or if you can just read the entire file in one shot.