16 Questions
Python allows for either pairs of ______ or double quotes.
single
Indexes start at ______.
0
Subsets of strings can be taken using the slice operator ______ and [:].
[]
The plus (+) sign is a string ______ operator.
concatenation
The ______ (,) is another string concatenation operator.
comma
In Python, subsets of strings can be taken using the slice operator ______ and [:].
[]
The equal sign assigns a value to a variable name. For example, variable result = 89. The value 89 is stored in the computer’s ______.
memory
Type conversions (cast) allow you to convert objects of one type to another. For instance, float(3) converts the integer 3 to a float 3.0. int(3.9) truncates the float 3.9 to an ______.
integer
Objects have a type that defines the kinds of things programs can do to them. For example, a Boolean data type can have values that are either ______ or ______.
True, False
The ______ sign assigns a value to a variable name. An assignment binds the name to a value.
equal
Abstracting expressions involves giving names to values of expressions. Why do we give names to values of expressions? To improve ______ and ______.
readability, reusability
Scalar objects in Python include int, float, bool, and NoneType. int represents integers, e.g., 5. bool represents Boolean values that are either ______ or ______.
True, False
The boolean data type, is used to represent truth values i.e.True. The two truth states can be assigned to variables and can also be used to ____evaluate expressions. Is 45 > 35? The answer would be: For example: True. Is 89 < 79? The answer would be: False. Fill in the blank: ____
False
Relational operators are used to values. The result value compare of a comparison is always a (True or False). Fill in the blank: Relational ____
Operators
Basic Operators in rs Python Expressions. Fill in the blank: The asterisk (*) sign is the string repetition ____
operator
Boolean values zero = False one = True. Fill in the blank: The boolean data type, is used to represent truth values i.e.____
True
Study Notes
Data Types in Python
- Strings: sequences of characters, e.g. "Hello World!"
- Boolean: represents truth values, either True or False
- Scalar objects: cannot be subdivided, e.g. int, float, bool, NoneType
- Non-scalar objects: have internal structure that can be accessed
String Operations
- Concatenation: using the
+operator, e.g. "College of" + "Technological" + "Innovation" - Repetition: using the
*operator, e.g. "Hello World!" * 2 - Slicing: using the
[]and[:]operators, e.g. "Hello World!"[0] returns the first character, "Hello World!"[2:5] returns characters from the 3rd to the 5th
Boolean Operations
- Boolean values: True or False
- Assigning Boolean values to variables: e.g.
zero = False,one = True - Evaluating Boolean expressions: e.g.
45 > 35returns True,89 < 79returns False
Operators
- Arithmetic operators:
+,-,*,/,%,**, etc. - Relational operators:
==,!=,>,<,>=,<= - Logical operators:
and,or,not - Operator precedence: parentheses,
**,*,/,+,-, etc.
Variables and Data Types
- Binding variables and values: using the
=operator, e.g.result = 89 - Retrieving values: using the variable name, e.g.
print(result) - Type conversions: using the
type()function, e.g.float(3)converts the integer 3 to a float 3.0
Abstracting Expressions
- Assigning names to values of expressions: using the
=operator, e.g.result = 3 + 4 * 5 - Evaluating expressions: using the
print()function, e.g.print(result)
Course Introduction
- Introduction to Programming and Problem Solving (SWE225)
- Topics: Variables and Data Types, Basic Data Types in Python, Operators, etc.
Test your knowledge on Python data types and string operations with this quiz. Questions cover topics like string concatenation, repetition, and boolean data type. See how well you understand these concepts!
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