Course Notes: Regular Expressions in Python

# Import any packages you want to use here

# Add your code snippets here
# Find characters in movie variable
length_string = len(movie)

# Convert to string
to_string = str(length_string)

# Predefined variable
statement = "Number of characters in this review:"

# Concatenate strings and print result
print(statement +" "+ to_string)

# Select the first 32 characters of movie1
first_part = movie1[:32]

# Select from 43rd character to the end of movie1
last_part = movie1[42:]

# Select from 33rd to the 42nd character
middle_part = movie2[32:42]

# Print concatenation and movie2 variable
print(first_part+middle_part+last_part) 
print(movie2)

# Get the word
movie_title = movie[11:30]

# Obtain the palindrome
palindrome = movie_title[::-1]

# Print the word if it's a palindrome
if movie_title == palindrome:
	print(movie_title)

# Convert to lowercase and print the result
movie_lower = movie.lower()
print(movie_lower)

# Remove specified character and print the result
movie_no_sign = movie_lower.strip("$")
print(movie_no_sign)

# Split the string into substrings and print the result
movie_split = movie_no_sign.split()
print(movie_split)

# Select root word and print the result
word_root = movie_split[1][0:-1]
print(word_root)

# Remove tags happening at the end and print results
movie_tag = movie.rstrip("<\i>")
print(movie_tag)

# Split the string using commas and print results
movie_no_comma = movie_tag.split(",")
print(movie_no_comma)

# Join back together and print results
movie_join = " ".join(movie_no_comma)
print(movie_join)

# Split string at line boundaries
file_split = file.split("\n")

# Print file_split
print(file_split)

# Complete for-loop to split by commas
for substring in file_split:
    substring_split = substring.split(',')
    print(substring_split)

for movie in movies:
  	# If actor is not found between character 37 and 41 inclusive
    # Print word not found
    if movie.find("actor", 37, 42) == -1:
        print("Word not found")
    # Count occurrences and replace two with one
    elif movie.count("actor") == 2:  
        print(movie.replace("actor actor", "actor"))
    else:
        # Replace three occurrences with one
        print(movie.replace("actor actor actor", "actor"))

for movie in movies:
  try:
    # Find the first occurrence of word
  	print(movie.index("money", 12, 51))
  except ValueError:
    print("substring not found")

# Replace negations 
movies_no_negation = movies.replace("isn't", "is")

# Replace important
movies_antonym = movies_no_negation.replace("important", "insignificant")

# Print out
print(movies_antonym)

# Assign the substrings to the variables
first_pos = wikipedia_article[3:19].lower()
second_pos = wikipedia_article[21:44].lower()

# Define string with placeholders 
my_list.append("The tool {} is used in {}")

# Define string with rearranged placeholders
my_list.append("The tool {1} is used in {0}")

# Use format to print strings
for my_string in my_list:
  	print(my_string.format(first_pos, second_pos))

courses = ['artificial intelligence', 'neural networks']

# Create a dictionary
plan = {
  		"field": courses[0],
        "tool": courses[1]
        }

# Complete the placeholders accessing elements of field and tool keys in the data dictionary
my_message = "If you are interested in {data[field]}, you can take the course related to {data[tool]}"

# Use the plan dictionary to replace placeholders
print(my_message.format(data=plan))