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Questions and Answers
Which of the following best describes a Python string?
Which of the following best describes a Python string?
- An object that represents a function in Python
- A sequence of characters used for representing textual data (correct)
- A collection of integer values stored in an array
- A variable that can hold multiple types of data together
How are strings organized in Python?
How are strings organized in Python?
- As unordered sets of unique characters
- As mutable objects that can change size during runtime
- As ordered collections of characters indexed by integers (correct)
- As fixed-length character arrays
What will be the output of the expression 'hello'.upper() in Python?
What will be the output of the expression 'hello'.upper() in Python?
- HELlo
- HELLO (correct)
- Hello
- hello
Which method would you use to find the index of a substring within a Python string?
Which method would you use to find the index of a substring within a Python string?
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What will happen if you attempt to concatenate a string with an integer in Python?
What will happen if you attempt to concatenate a string with an integer in Python?
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Study Notes
Python Strings
- Immutable Sequences: Python strings are sequences of characters, meaning they are ordered collections of characters. They are also immutable, which means you can't change individual characters within a string.
- ** Indexing:** Strings are indexed using numbers, starting from 0 for the first character.
- Slicing: You can extract portions of a string using slicing.
String Methods
- '.upper()': Conerts a string to uppercase
- '.find()': Finds the index of a substring within a string.
String Operations
- Concatenation: Strings can be joined together using the '+' operator. However, you cannot directly concatenate strings with integers. You must convert the integer to a string first.
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