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True vs False in Python Variables | Practice & Progress Guide

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Master Python boolean variables with hands‑on exercises! Learn how to use True and False, explore type() and id(), and test your understanding with self‑grading practice questions.

🔍 True or False

🟢 Beginner

  1. Variable names in Python are case-sensitive.
    2. Answer

    ✅ True – Python treats uppercase and lowercase letters as distinct (e.g., `myVar` and `myvar` are different variables).

  2. In Python, variables must be declared with a specific data type before they can be used.
    3. Answer

    ❌ False – Python uses dynamic typing - variables are created when first assigned a value, without explicit type declaration.

  3. The statement `x = 5` both creates the variable x and assigns it the value 5.
    4. Answer

    ✅ True – In Python, assignment to a new variable name automatically creates that variable.

  4. Python variable names can start with a number.
    5. Answer

    ❌ False – Variable names must start with a letter (a-z, A-Z) or underscore (_).

  5. `x = y = 5` is a valid way to assign the same value to multiple variables.
    6. Answer

    ✅ True – Python allows chained assignments in a single line.

  6. Variables must be explicitly deleted using `del` to free memory.
    7. Answer

    ❌ False – Python's garbage collector automatically handles memory management.

  7. `None` is the same as `False` in Python.
    8. Answer

    ❌ False – `None` is a distinct object representing 'no value', while `False` is a boolean.

🟡 Intermediate

  1. Python is a statically typed language.
    2. Answer

    ❌ False – Python is dynamically typed - variable types are checked at runtime.

  2. A variable can hold an integer first, then a string later in the same program.
    3. Answer

    ✅ True – Dynamic typing allows variables to change types during execution.

  3. `type()` function returns the current type of a variable.
    4. Answer

    ✅ True – `type(x)` shows the type of object `x` currently references.

  4. A function without a `return` statement returns `None`.
    5. Answer

    ✅ True – Python functions implicitly return `None` if no return statement exists.

  5. `x = None` is equivalent to not defining `x` at all.
    6. Answer

    ❌ False – `x = None` creates a variable bound to the `None` object, while an undefined variable raises a `NameError`.

  6. In Python, `a = b` creates a copy of `b`'s value.
    7. Answer

    ❌ False – Assignment creates a new reference to the same object (aliasing), not a copy.

🔴 Advanced

  1. `None` occupies zero bytes in memory.
    2. Answer

    ❌ False – `None` is a singleton object that does occupy memory (like any Python object).

  2. `None` can be used as a dictionary key.
    3. Answer

    ✅ True – `None` is hashable and can be used as a key, unlike mutable objects.

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