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Questions and Answers
What is the primary purpose of arithmetic operators in Python?
What is the primary purpose of arithmetic operators in Python?
- To compare two values
- To determine the logic between variables
- To perform common mathematical operations (correct)
- To assign values to variables
In Python, the 'is' operator checks if two variables are equal in value, whereas the '==' operator checks if they refer to the same object in memory.
In Python, the 'is' operator checks if two variables are equal in value, whereas the '==' operator checks if they refer to the same object in memory.
False (B)
Explain the difference between the / and // operators in Python.
Explain the difference between the / and // operators in Python.
The / operator performs division and returns a floating-point result, while the // operator performs floor division and returns an integer result.
The Python operator that returns True if a sequence with the specified value is not present in the object is called ______.
The Python operator that returns True if a sequence with the specified value is not present in the object is called ______.
Match the following Python operators with their descriptions:
Match the following Python operators with their descriptions:
What will be the output of the expression print(2 * 3 ** 2 + 4 / 2 - 1) in Python, considering operator precedence?
What will be the output of the expression print(2 * 3 ** 2 + 4 / 2 - 1) in Python, considering operator precedence?
In Python, any non-empty string will evaluate to True when converted to a boolean value.
In Python, any non-empty string will evaluate to True when converted to a boolean value.
Explain how Python converts numbers into binary before preforming bitwise operations?
Explain how Python converts numbers into binary before preforming bitwise operations?
The Python operator that will shift left by pushing zeros in from the right and let the leftmost bits fall off is called ______.
The Python operator that will shift left by pushing zeros in from the right and let the leftmost bits fall off is called ______.
Match the following assignment operators with their equivalent long forms:
Match the following assignment operators with their equivalent long forms:
What is the output of print(not(True and False) or (True and True))?
What is the output of print(not(True and False) or (True and True))?
The result of the expression 5 >> 1 is 2?
The result of the expression 5 >> 1 is 2?
Illustrate an example of 'Zero fill left shift'.
Illustrate an example of 'Zero fill left shift'.
______ operators are used to test if a sequence is presented in an object.
______ operators are used to test if a sequence is presented in an object.
Match the name to the bitwise operator.
Match the name to the bitwise operator.
What will be the output of the following code snippet?
x = ['apple', 'banana'] y = ['apple', 'banana'] print(x is y)
What will be the output of the following code snippet?
x = ['apple', 'banana'] y = ['apple', 'banana'] print(x is y)
The expression bool(0) will evaluate in True.
The expression bool(0) will evaluate in True.
Based on operator precedence, what is the output of print(100 // 50 * 3)?
Based on operator precedence, what is the output of print(100 // 50 * 3)?
The Python operator that returns True if both variables are the same object is called ______.
The Python operator that returns True if both variables are the same object is called ______.
Match each logical operator with their correct description.
Match each logical operator with their correct description.
What will the print() statements output?
What will the print() statements output?
The following code snippet will print("b is greater than a")
The following code snippet will print("b is greater than a")
Provide an example of an expression using comparison operators
Provide an example of an expression using comparison operators
Floor division ______ returns the division quotient
Floor division ______ returns the division quotient
Match each arithmetic operator with their example
Match each arithmetic operator with their example
Which of the following code snippets will return True? (Select all that apply)
Which of the following code snippets will return True? (Select all that apply)
The following code snippet will return True 5 < 5 and 5 < 10
The following code snippet will return True 5 < 5 and 5 < 10
What will this expression output based on operator precedence? print(8 >> 4 - 2)
What will this expression output based on operator precedence? print(8 >> 4 - 2)
The ______ function allows you to evaluate any value, and give you True or False in return
The ______ function allows you to evaluate any value, and give you True or False in return
Flashcards
Arithmetic Operators
Arithmetic Operators
Operators that carries out arithmetic operations on numeric values.
Addition Operator (+)
Addition Operator (+)
An operator that performs addition.
Subtraction Operator (-)
Subtraction Operator (-)
Operator that performs subtraction.
Multiplication Operator (*)
Multiplication Operator (*)
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Division Operator (/)
Division Operator (/)
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Modulus Operator (%)
Modulus Operator (%)
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Floor Division Operator (//)
Floor Division Operator (//)
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Exponentiation Operator (**)
Exponentiation Operator (**)
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Assignment Operators
Assignment Operators
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Assignment Operator (=)
Assignment Operator (=)
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Addition Assignment Operator (+=
Addition Assignment Operator (+=
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Subtraction Assignment Operator (-=)
Subtraction Assignment Operator (-=)
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Comparison Operators
Comparison Operators
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Equal Operator (==)
Equal Operator (==)
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Not Equal Operator (!=)
Not Equal Operator (!=)
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Greater Than Operator (>)
Greater Than Operator (>)
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Logical Operators
Logical Operators
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AND Operator
AND Operator
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OR Operator
OR Operator
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NOT Operator
NOT Operator
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Bitwise Operators
Bitwise Operators
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AND Bitwise Operator (&)
AND Bitwise Operator (&)
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OR Bitwise Operator (|)
OR Bitwise Operator (|)
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Identity Operators
Identity Operators
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IS Operator
IS Operator
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Membership Operators
Membership Operators
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Operator Precedence
Operator Precedence
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Booleans
Booleans
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bool() function
bool() function
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Division operator(/)
Division operator(/)
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Study Notes
Python Operators: An Overview
- Python operators are categorized into arithmetic, assignment, comparison, logical, bitwise, membership, and identity operators.
Arithmetic Operators
- Arithmetic operators perform common mathematical operations on numeric values.
- Addition (+):
x + y - Subtraction (-):
x - y - Multiplication (*):
x * y - Division (/):
x / y - Modulus (%): Returns the remainder of a division:
x % y - Floor Division (//): Returns the integer part of the division:
x // y - Exponentiation (**):
x ** y
Assignment Operators
- Assignment operators assign values to variables.
- Assignment (=):
x = y - Addition Assignment (+=):
x += yis equivalent tox = x + y - Subtraction Assignment (-=):
x -= yis equivalent tox = x - y - Multiplication Assignment (*=):
x *= yis equivalent tox = x * y - Division Assignment (/=):
x /= yis equivalent tox = x / y - Modulus Assignment (%=):
x %= yis equivalent tox = x % y - Floor Division Assignment (//=):
x //= yis equivalent tox = x // y - Exponentiation Assignment (**=):
x **= yis equivalent tox = x ** y
Comparison Operators
- Comparison operators determine equality or difference between variables in logical statements.
- Equal (==):
x == y - Not Equal (!=):
x != y - Greater Than (>):
x > y - Less Than (<):
x < y - Greater Than or Equal To (>=):
x >= y - Less Than or Equal To (<=):
x <= y
Logical Operators
- Logical operators determine logic between variables.
- AND: Returns True if both statements are true:
x < 5 and x < 10 - OR: Returns True if one of the statements is true:
x < 5 or x < 4 - NOT: Reverses the result, returning False if the result is true:
not(x < 5 and x < 10)
Bitwise Operators
- Bitwise operators compare binary numbers and operate on 32-bit signed integers.
- Python converts numbers to 32-bit signed integers before a bitwise operation.
- The result is converted back to a Python number after the operation.
- AND (&): Sets each bit to 1 if both bits are 1;
5 & 1results in 1 - OR (|): Sets each bit to 1 if one of two bits is 1;
5 | 1results in 5 - XOR (^): Sets each bit to 1 if only one of two bits is 1;
5 ^ 1results in 4 - NOT (~): Inverts all the bits;
~5results in 10 - Left Shift (<<): Shifts left by pushing zeros in from the right, letting the leftmost bits fall off;
5 << 1results in 10 - Right Shift (>>): Shifts right by pushing copies of the leftmost bit in from the left, letting the rightmost bits fall off;
5 >> 1results in 2
Identity Operators
- Identity operators compare the objects, not if they are equal, but if they are actually the same object with the same memory location.
is: Returns True if both variables are the same object:x is yis not: Returns True if both variables are not the same object:x is not y
Membership Operators
- Membership operators test if a sequence is presented in an object.
in: Returns True if a sequence with the specified value is present in the object:x in ynot in: Returns True if a sequence with the specified value is not present in the object:x not in y
Operator Precedence
- Operator precedence dictates the order operations are performed and multiplication and division have higher precedence than addition and subtraction.
- Parentheses have the highest precedence.
Python Booleans
- Booleans represent either True or False.
- Expressions in Python can be evaluated to True or False.
- Almost any value is evaluated to True if it has content.
- A string is True, except empty strings.
- Any number is True, except
0. - Any list, tuple, set, and dictionary are True, except empty ones.
Python Exercises
- Division operator (/) divides numbers.
- Modulus operator (%) returns the division remainder.
- Floor division (//) returns the division quotient.
- Arithmetic assignment operators are a shorthand way of performing arithmetic operations and assigning the result to a variable in a single step.
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