Data Science and Machine Learning (Theory and Projects) A to Z - String in Python: String Methods

The video tutorial covers various string methods in Python, including strip, lower, upper, replace, and split. It explains how these methods are used to manipulate strings, such as removing spaces, changing case, replacing substrings, and splitting strings into lists. The tutorial also highlights the difference between methods and functions, and how to explore more string functions using documentation and tools like Jupyter Notebook.

What is the primary difference between a method and a function in Python?

• Methods are called with a dot and functions are not.

• Functions require more memory than methods.

• Functions are faster than methods.

• Methods can only be used with strings.

What does the strip method do to a string?

• Converts the string to uppercase.

• Removes spaces from the beginning and end of the string.

• Removes all spaces from the string.

• Splits the string into a list.

Which method would you use to convert a string to all lowercase letters?

• lower

• upper

• replace

• strip

What is the result of using the upper method on a string?

• The string is trimmed of spaces.

• The string is reversed.

• The string is converted to all uppercase letters.

• The string is split into a list.

How does the replace method modify a string?

• It removes all spaces from the string.

• It converts the string to lowercase.

• It substitutes a specified substring with another substring.

• It splits the string into a list.

Which method would you use to replace all occurrences of a substring in a string?

• split

• lower

• strip

• replace

What is the purpose of the split method in Python?

• To join multiple strings into one.

• To remove spaces from the beginning and end of a string.

• To convert a string to uppercase.

• To divide a string into a list based on a delimiter.

What does the capitalize method do to a string?

• Splits the string into a list.

• Converts the entire string to uppercase.

• Converts the first character to uppercase and the rest to lowercase.

• Removes all spaces from the string.

How can you explore available string methods in Python?

• By writing the string variable followed by a dot and pressing tab.

• By using the strip method.

• By using the help function.

• By converting the string to a list.

Why is it recommended to use built-in string methods in Python?

• They are slower than custom functions.

• They are more efficient and optimized.

• They are easier to write than custom functions.

• They require less memory.