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Questions and Answers
What is the key characteristic of a variable's data type in Python?
What is the difference between the expressions 5/2 and 5//2 in Python?
In Python, how are type conversions performed when they are not done implicitly?
What are the possible values of the bool data type in Python?
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What is the relationship between expressions and statements in Python?
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Which of the following is directly understood by the computer?
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Which of the following is not an example of a high-level programming language?
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What is the operand on the left side of the assignment operator (=) in Python?
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Which of the following is an example of a keyword in Python?
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Which of the following is the interface to work with the Python language?
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Study Notes
Data Type Conversion
- Type conversion is the process of converting the value of one data type to another.
- There are two types of type conversion in Python: implicit conversion and explicit conversion.
Implicit Conversion
- Implicit conversion is a type of conversion that Python does automatically without the involvement of the programmer.
- It is done to avoid loss of data.
- In implicit conversion, Python always converts smaller data types to larger data types.
- For example, when adding an int and a float, Python automatically converts the int to a float to avoid data loss.
Explicit Conversion
- Explicit conversion is a type of conversion that is done by the programmer.
- It is done using predefined functions associated with different kinds of data types, such as int(), float(), and str().
- The syntax for explicit conversion is ([value]).
- Explicit conversion is necessary when adding a string and an integer, as Python does not allow adding these two data types directly.
Operators
- The modulus (%) operator returns the remainder of the division of the left operand by the right one.
- The floor division (//) operator divides and returns only the integer value of the quotient.
- The division (/) operator generates the exact division result, including the fraction part if any.
- The exponentiation (**) operator raises the left operand to the power of the right operand.
Variables
- Variables can be assigned to values of a different data type than the one they were previously assigned to.
- The value of a variable, as well as its type, can be changed to something different from what it was first set to in Python.
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Description
Test your knowledge on Python arithmetic operators such as concatenation, modulus, floor division, division, and exponentiation. Explore how these operators work with different data types.
