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Questions and Answers
Python allows for either pairs of ______ or double quotes.
Python allows for either pairs of ______ or double quotes.
single
Indexes start at ______.
Indexes start at ______.
0
Subsets of strings can be taken using the slice operator ______ and [:].
Subsets of strings can be taken using the slice operator ______ and [:].
[]
The plus (+) sign is a string ______ operator.
The plus (+) sign is a string ______ operator.
The ______ (,) is another string concatenation operator.
The ______ (,) is another string concatenation operator.
In Python, subsets of strings can be taken using the slice operator ______ and [:].
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 ______.
The equal sign assigns a value to a variable name. For example, variable result = 89. The value 89 is stored in the computer’s ______.
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 ______.
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 ______.
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 ______.
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 ______.
The ______ sign assigns a value to a variable name. An assignment binds the name to a value.
The ______ sign assigns a value to a variable name. An assignment binds the name to a value.
Abstracting expressions involves giving names to values of expressions. Why do we give names to values of expressions? To improve ______ and ______.
Abstracting expressions involves giving names to values of expressions. Why do we give names to values of expressions? To improve ______ and ______.
Scalar objects in Python include int, float, bool, and NoneType. int represents integers, e.g., 5. bool represents Boolean values that are either ______ or ______.
Scalar objects in Python include int, float, bool, and NoneType. int represents integers, e.g., 5. bool represents Boolean values that are either ______ or ______.
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: ____
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: ____
Relational operators are used to values. The result value compare of a comparison is always a (True or False). Fill in the blank: Relational ____
Relational operators are used to values. The result value compare of a comparison is always a (True or False). Fill in the blank: Relational ____
Basic Operators in rs Python Expressions. Fill in the blank: The asterisk (*) sign is the string repetition ____
Basic Operators in rs Python Expressions. Fill in the blank: The asterisk (*) sign is the string repetition ____
Boolean values zero = False one = True. Fill in the blank: The boolean data type, is used to represent truth values i.e.____
Boolean values zero = False one = True. Fill in the blank: The boolean data type, is used to represent truth values i.e.____
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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.
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