Question 1

Which of the following statements is false?

Accepted Answer

A)  Dividing by zero with / or // is not allowed and results in an exception-an indication that a problem occurred. 
B)  Python reports an exception with a traceback. 
C)  Most exception names end with Exception. 
D)  In IPython interactive mode, the line that begins with ----> shows the code that caused the exception. 
A)  Dividing by zero with / or // is not allowed and results in an exception-an indication that a problem occurred. 
B)  Python reports an exception with a traceback. 
C)  Most exception names end with Exception. 
D)  In IPython interactive mode, the line that begins with ----> shows the code that caused the exception. C

Question 2

Which of the following statements about functional-style programming is false?

Accepted Answer

A)  With xe "functional-style programming"functional-style programming capabilities you can write code that is more concise, clearer and easier to debug (find and correct errors). 
B)  The min and max functions are examples of a functional-style programming concept called reduction. They reduce a collection of values to a single value. 
C)  Other reductions you'll see include the sum, average, variance and standard deviation of a collection of values. 
D)  All reductions are built into Python-you cannot define custom reductions. 
A)  With xe "functional-style programming"functional-style programming capabilities you can write code that is more concise, clearer and easier to debug (find and correct errors). 
B)  The min and max functions are examples of a functional-style programming concept called reduction. They reduce a collection of values to a single value. 
C)  Other reductions you'll see include the sum, average, variance and standard deviation of a collection of values. 
D)  All reductions are built into Python-you cannot define custom reductions. D

Question 3

Which of the following statements about descriptive statistics is false?

Accepted Answer

A)  The minimum is the smallest value in a collection of values. 
B)  The range is the values starting with the minimum and ending with the maximum. 
C)  The count is the number of values in a collection. 
D)  Measures of dispersion (also called measures of variability), such as count, help determine how spread out values are. 
A)  The minimum is the smallest value in a collection of values. 
B)  The range is the values starting with the minimum and ending with the maximum. 
C)  The count is the number of values in a collection. 
D)  Measures of dispersion (also called measures of variability), such as count, help determine how spread out values are. D

Question 4

The value 10.5 is a(n) _______ (that is, a number with a decimal point).

Accepted Answer

A)  integer 
B)  string 
C)  floating-point number 
D)  None of the above 
A)  integer 
B)  string 
C)  floating-point number 
D)  None of the above

Question 5

Which of the following statements is false?

Accepted Answer

A)  The value of the following expression is 3: 17 % 5 
B)  The value of the following expression is 0.5: 7.5 % 3.5 
C)  You can use the remainder operator for applications such as determining whether one number is a multiple of another. 
D)  You can use the remainder operator to determine whether a number is odd or even. 
A)  The value of the following expression is 3: 17 % 5 
B)  The value of the following expression is 0.5: 7.5 % 3.5 
C)  You can use the remainder operator for applications such as determining whether one number is a multiple of another. 
D)  You can use the remainder operator to determine whether a number is odd or even.

Question 6

Which of the following statements is false?

Accepted Answer

A)  The following if statement uses the xe "== equality operator"== comparison operator to determine whether the values of variables number1 and number2 are equal: if number1 == number2:
Print(number1, 'is equal to', number2) 
B)  Each xe "if statement"if statement consists of the xe "keyword"keyword if, the condition to test, and a xe "\: (colon)"colon (xe "\: (colon)":) followed by an indented body called a suite. 
C)  Each suite contains zero or more statements. 
D)  Forgetting the colon (xe "\: (colon)":) after the condition is a common syntax error. 
A)  The following if statement uses the xe "== equality operator"== comparison operator to determine whether the values of variables number1 and number2 are equal: if number1 == number2:
Print(number1, 'is equal to', number2) 
B)  Each xe "if statement"if statement consists of the xe "keyword"keyword if, the condition to test, and a xe "\: (colon)"colon (xe "\: (colon)":) followed by an indented body called a suite. 
C)  Each suite contains zero or more statements. 
D)  Forgetting the colon (xe "\: (colon)":) after the condition is a common syntax error.

Question 7

Which of the following statements is false?

Accepted Answer

A)  A string delimited by single quotes may include double-quote characters: print('Display "hi" in quotes') 
B)  A string delimited by double quotes may include single quote characters: print("Display the name O'Brien") 
C)  A string delimited by double quotes may not include double quotes. 
D)  To avoid using \' and \" inside strings, you can enclose such strings in triple quotes. 
A)  A string delimited by single quotes may include double-quote characters: print('Display "hi" in quotes') 
B)  A string delimited by double quotes may include single quote characters: print("Display the name O'Brien") 
C)  A string delimited by double quotes may not include double quotes. 
D)  To avoid using \' and \" inside strings, you can enclose such strings in triple quotes.

Question 8

Which of the following statements about arithmetic operators is false?

Accepted Answer

A)  Each arithmetic operator may be used with integers and floating-point numbers. 
B)  If both xe "operand"operands are integers, the result is an integer-except for the xe "true division operator (/)"true-division (/) operator, which always yields a floating-point number. 
C)  If both operands are floating-point numbers, the result is a floating-point number. 
D)  Expressions containing an integer and a floating-point number are mixed-type expressions-these always produce an integer. 
A)  Each arithmetic operator may be used with integers and floating-point numbers. 
B)  If both xe "operand"operands are integers, the result is an integer-except for the xe "true division operator (/)"true-division (/) operator, which always yields a floating-point number. 
C)  If both operands are floating-point numbers, the result is a floating-point number. 
D)  Expressions containing an integer and a floating-point number are mixed-type expressions-these always produce an integer.

Question 9

Which of the following statements is false?

Accepted Answer

A)  Assigning an object to a variable binds that variable's name to the object. You can then use the variable in your code to access the object's value. 
B)  After the following snippet's assignment, the variable x refers to the integer xe "object"object containing 7. x = 7 
C)  The following statement changes x's value: x + 10 
D)  The following statement changes x's value: x = x + 10 
A)  Assigning an object to a variable binds that variable's name to the object. You can then use the variable in your code to access the object's value. 
B)  After the following snippet's assignment, the variable x refers to the integer xe "object"object containing 7. x = 7 
C)  The following statement changes x's value: x + 10 
D)  The following statement changes x's value: x = x + 10

Question 10

Which of the following statements is incorrect?

Accepted Answer

A)  min(17, 19, 23, 29, 31, 37, 43) is a valid call to built-in function min. 
B)  The range of values is simply the minimum through the maximum value. 
C)  Much of data science is devoted to getting to know your data. 
D)  All of the above are correct. 
A)  min(17, 19, 23, 29, 31, 37, 43) is a valid call to built-in function min. 
B)  The range of values is simply the minimum through the maximum value. 
C)  Much of data science is devoted to getting to know your data. 
D)  All of the above are correct.

Question 11

Which of the following statements is false?

Accepted Answer

A)  Algebraic expressions must be typed in straight-line form using Python's operators. 
B)  The following code multiplies 10 times the quantity 5 + 3, yielding the result 80: 10 * (5 + 3) 
C)  Parentheses in an expression are said to be redundant (unnecessary) if removing them yields the same result. 
D)  The parentheses in part (b) above are redundant. 
A)  Algebraic expressions must be typed in straight-line form using Python's operators. 
B)  The following code multiplies 10 times the quantity 5 + 3, yielding the result 80: 10 * (5 + 3) 
C)  Parentheses in an expression are said to be redundant (unnecessary) if removing them yields the same result. 
D)  The parentheses in part (b) above are redundant.

Question 12

Which of the following statements is false?

Accepted Answer

A)  True division (/) divides a numerator by a denominator and yields a xe "floating-point number"floating-point number with a decimal point. 
B)  Floor division (//) divides a numerator by a denominator, yielding the highest integer that's not greater than the result. 
C)  The expression -13 / 4 evaluates to -3.25. 
D)  The expression -13 // 4 evaluates to -3. 
A)  True division (/) divides a numerator by a denominator and yields a xe "floating-point number"floating-point number with a decimal point. 
B)  Floor division (//) divides a numerator by a denominator, yielding the highest integer that's not greater than the result. 
C)  The expression -13 / 4 evaluates to -3.25. 
D)  The expression -13 // 4 evaluates to -3.

Question 13

Which of statements a), b) or c) is false?

Accepted Answer

A)  A variable name, such as x, is an identifier. 
B)  Each identifier may consist of letters, digits and xe "underscore character (_)"underscores (_) but may not begin with a digit. 
C)  Python is xe "case sensitive"case insensitive, so number and Number are the same identifier despite the fact that one begins with a xe "lowercase letter"lowercase letter and the other begins with an xe "uppercase letter"uppercase letter. 
D)  All of the above statements are true. 
A)  A variable name, such as x, is an identifier. 
B)  Each identifier may consist of letters, digits and xe "underscore character (_)"underscores (_) but may not begin with a digit. 
C)  Python is xe "case sensitive"case insensitive, so number and Number are the same identifier despite the fact that one begins with a xe "lowercase letter"lowercase letter and the other begins with an xe "uppercase letter"uppercase letter. 
D)  All of the above statements are true.

Question 14

Which of the following statements is false?

Accepted Answer

A)  Python requires you to xe "indentation"indent the statements in suites. 
B)  Incorrect indentation of the statements in a suite can cause errors. 
C)  Using the xe "= assignment symbol"xe "assignment symbol (=)"assignment symbol (=) instead of the equality operator (==) in an if statement's condition is a common logic error. 
D)  Using == in place of = in an assignment statement can lead to subtle problems. 
A)  Python requires you to xe "indentation"indent the statements in suites. 
B)  Incorrect indentation of the statements in a suite can cause errors. 
C)  Using the xe "= assignment symbol"xe "assignment symbol (=)"assignment symbol (=) instead of the equality operator (==) in an if statement's condition is a common logic error. 
D)  Using == in place of = in an assignment statement can lead to subtle problems.

Question 15

Which of the following Python concepts are demonstrated directly or indirectly by the following code: In [1]: x = 7
Out[1]: int
In [2]: type(x)
Out[2]: int
In [3]: x = 4.1
In [4]: type(x)
Out[4]: float
In [5]: x = 'dog'
In [6]: type(x)
Out[6]: str

Accepted Answer

A)  Python uses xe "dynamic:typing"dynamic typing-it determines the type of the object a variable refers to while executing your code. 
B)  Over its lifetime a variable can be bound to different objects, even objects of different types. 
C)  Python creates objects in memory and removes them from memory as necessary. This removal process-called garbage collection-helps ensure that memory is available for new objects you create. 
D)  All of the above. 
A)  Python uses xe "dynamic:typing"dynamic typing-it determines the type of the object a variable refers to while executing your code. 
B)  Over its lifetime a variable can be bound to different objects, even objects of different types. 
C)  Python creates objects in memory and removes them from memory as necessary. This removal process-called garbage collection-helps ensure that memory is available for new objects you create. 
D)  All of the above.

Question 16

You may spread a lengthy xe "statement spread over several lines"statement over several lines with the ________ continuation character.

Accepted Answer

A)  @ 
B)  xe "continuation character (\)"xe "\ continuation character"\ 
C)  % 
D)  ^ 
A)  @ 
B)  xe "continuation character (\)"xe "\ continuation character"\ 
C)  % 
D)  ^

Question 17

Which of the following statements is false?

Accepted Answer

A)  Variables store values for later use in your code. 
B)  The following statement creates x and uses the assignment symbol (=) to give x a value. x = 7 
C)  Every statement stops at the end of the line in which it begins. 
D)  Once x and y are created and assigned values, you can use the values in expressions like: x + y 
A)  Variables store values for later use in your code. 
B)  The following statement creates x and uses the assignment symbol (=) to give x a value. x = 7 
C)  Every statement stops at the end of the line in which it begins. 
D)  Once x and y are created and assigned values, you can use the values in expressions like: x + y

Question 18

The value of the expression '7' + '3' is the ________.

Accepted Answer

A)  integer 10 
B)  string '10' 
C)  string '73' 
D)  integer 73. 
A)  integer 10 
B)  string '10' 
C)  string '73' 
D)  integer 73.

Question 19

Which of the following statements is false?

Accepted Answer

A)  The following assignment statement adds the values of variables x and y and assigns the result to the variable total: total = x + y 
B)  The snippet in Part (a) is read, "total is assigned the value of x + y." 
C)  The xe "= assignment symbol"xe "assignment symbol (=)"= symbol is the assignment operator. 
D)  The right side of the = symbol always executes first, then the result is assigned to the variable on the symbol's left side. 
A)  The following assignment statement adds the values of variables x and y and assigns the result to the variable total: total = x + y 
B)  The snippet in Part (a) is read, "total is assigned the value of x + y." 
C)  The xe "= assignment symbol"xe "assignment symbol (=)"= symbol is the assignment operator. 
D)  The right side of the = symbol always executes first, then the result is assigned to the variable on the symbol's left side.

Question 20

Triple-quoted strings are used to create:

Accepted Answer

A)  multiline strings 
B)  strings containing single or double quotes 
C)  docstrings, which are the recommended way to document the purposes of certain program components. 
D)  All of the above 
A)  multiline strings 
B)  strings containing single or double quotes 
C)  docstrings, which are the recommended way to document the purposes of certain program components. 
D)  All of the above

Which of the following statements is false?

Which of the following statements about functional-style programming is false?

Which of the following statements about descriptive statistics is false?

The value 10.5 is a(n) _______ (that is, a number with a decimal point).

Which of the following statements is false?

Which of the following statements is false?

Which of the following statements is false?

Which of the following statements about arithmetic operators is false?

Which of the following statements is false?

Which of the following statements is incorrect?

Which of the following statements is false?

Which of the following statements is false?

Which of statements a), b) or c) is false?

Which of the following statements is false?

Which of the following Python concepts are demonstrated directly or indirectly by the following code: In [1]: x = 7 Out[1]: int In [2]: type(x) Out[2]: int In [3]: x = 4.1 In [4]: type(x) Out[4]: float In [5]: x = 'dog' In [6]: type(x) Out[6]: str

You may spread a lengthy xe "statement spread over several lines"statement over several lines with the ________ continuation character.

Which of the following statements is false?

The value of the expression '7' + '3' is the ________.

Which of the following statements is false?

Triple-quoted strings are used to create:

Introduction to Computers and Python

Control Statements and Program Development

Functions

Sequences: Lists and Tuples

Dictionaries and Sets

Array-Oriented Programming With Num

Strings: a Deeper Look

Files and Exceptions

Object-Oriented Programming

Computer Science Thinking: Recursion, Searching, Sorting and Big O

Natural Language Processing

Data Mining Twitter

Ibm Watson and Cognitive Computing

Machine Learning: Classification, Regression and Clustering

Deep Learning

Big Data: Hadoop, Spark, Nosql and Iot

Filters

Exam 2: Introduction to Python Programming

Which of the following statements is false?

Which of the following statements about functional-style programming is false?

Which of the following statements about descriptive statistics is false?

The value 10.5 is a(n) _______ (that is, a number with a decimal point).

Which of the following statements is false?

Which of the following statements is false?

Which of the following statements is false?

Which of the following statements about arithmetic operators is false?

Which of the following statements is false?

Which of the following statements is incorrect?

Which of the following statements is false?

Which of the following statements is false?

Which of statements a), b) or c) is false?

Which of the following statements is false?

Which of the following Python concepts are demonstrated directly or indirectly by the following code: In [1]: x = 7 Out[1]: int In [2]: type(x) Out[2]: int In [3]: x = 4.1 In [4]: type(x) Out[4]: float In [5]: x = 'dog' In [6]: type(x) Out[6]: str

You may spread a lengthy xe "statement spread over several lines"statement over several lines with the ________ continuation character.

Which of the following statements is false?

The value of the expression '7' + '3' is the ________.

Which of the following statements is false?

Triple-quoted strings are used to create:

Introduction to Computers and Python

Control Statements and Program Development

Functions

Sequences: Lists and Tuples

Dictionaries and Sets

Array-Oriented Programming With Num

Strings: a Deeper Look

Files and Exceptions

Object-Oriented Programming

Computer Science Thinking: Recursion, Searching, Sorting and Big O

Natural Language Processing

Data Mining Twitter

Ibm Watson and Cognitive Computing

Machine Learning: Classification, Regression and Clustering

Deep Learning

Big Data: Hadoop, Spark, Nosql and Iot

Filters