Question 1

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

Accepted Answer

A)  When a xe "\ escape character"xe "backslash (\) escape character"backslash (\) appears in a string, it's known as the escape character. 
B)  The backslash and the character immediately following it form an escape sequence. For example, xe "\n newline escape sequence"
 represents the newline character escape sequence, which tells print to move the output cursor to the next line. 
C)  Placing two backslashes back-to-back tells print to display a blank line. 
D)  All of the above statements are true. 
A)  When a xe "\ escape character"xe "backslash (\) escape character"backslash (\) appears in a string, it's known as the escape character. 
B)  The backslash and the character immediately following it form an escape sequence. For example, xe "\n newline escape sequence"
 represents the newline character escape sequence, which tells print to move the output cursor to the next line. 
C)  Placing two backslashes back-to-back tells print to display a blank line. 
D)  All of the above statements are true.

Question 2

What does the int function attempt to do in the following code? value = input('Enter an integer: ')
Value = int(value)

Accepted Answer

A)  Convert an integer to a string. 
B)  Convert a string to an integer. 
C)  Convert a non-object to an object. 
D)  None of the above. 
A)  Convert an integer to a string. 
B)  Convert a string to an integer. 
C)  Convert a non-object to an object. 
D)  None of the above.

Question 3

Assume x is 3, y is 7.1 and z is '11.5'. Which of the following statements is incorrect?

Accepted Answer

A)  type(x) is int 
B)  the value of z is 11.5 
C)  the value of y is 7.1 
D)  type(z) is str 
A)  type(x) is int 
B)  the value of z is 11.5 
C)  the value of y is 7.1 
D)  type(z) is str

Question 4

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

Accepted Answer

A)  Python uses the asterisk (*) as the multiplication operator . 
B)  The exponentiation (**) operator raises one value to the power of another . 
C)  To square a number, you can use the exponent 1/2 (that is, 0.5), as in: 9 ** (1 / 2) 
D)  All of the above statements are true. 
A)  Python uses the asterisk (*) as the multiplication operator . 
B)  The exponentiation (**) operator raises one value to the power of another . 
C)  To square a number, you can use the exponent 1/2 (that is, 0.5), as in: 9 ** (1 / 2) 
D)  All of the above statements are true.

Question 5

Which of the following statements is false?

Accepted Answer

A)  You use blank lines and space characters to make code easier to read. 
B)  Together, blank lines, space characters and tab characters are known as xe "whitespace"white space. 
C)  Python ignores all white space. 
D)  Python allows you to split long code lines in parentheses without using continuation characters. 
A)  You use blank lines and space characters to make code easier to read. 
B)  Together, blank lines, space characters and tab characters are known as xe "whitespace"white space. 
C)  Python ignores all white space. 
D)  Python allows you to split long code lines in parentheses without using continuation characters.

Question 6

Which of the following statements is false?

Accepted Answer

A)  When you evaluate expressions in interactive mode, the text that print displays is preceded by Out[] with a snippet number in the square brackets. 
B)  print does not display a string's quotes, though there is a way to display quotes in strings. 
C)  You also may enclose a string in xe "double quotes ("")"double xe "quotes:double"quotes ("), as in: print("Welcome to Python!")
But Python programmers generally prefer single quotes. 
D)  When print completes its task, it positions the screen xe "cursor"cursor at the beginning of the next line by default. 
A)  When you evaluate expressions in interactive mode, the text that print displays is preceded by Out[] with a snippet number in the square brackets. 
B)  print does not display a string's quotes, though there is a way to display quotes in strings. 
C)  You also may enclose a string in xe "double quotes ("")"double xe "quotes:double"quotes ("), as in: print("Welcome to Python!")
But Python programmers generally prefer single quotes. 
D)  When print completes its task, it positions the screen xe "cursor"cursor at the beginning of the next line by default.

Question 7

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

Accepted Answer

A)  A condition is a Boolean expression with the value True or False. 
B)  True and False are keywords-words that Python reserves for its language features. 
C)  Using a keyword as an identifier causes a xe "SyntaxError"ValueError. 
D)  All of the above statements are true. 
A)  A condition is a Boolean expression with the value True or False. 
B)  True and False are keywords-words that Python reserves for its language features. 
C)  Using a keyword as an identifier causes a xe "SyntaxError"ValueError. 
D)  All of the above statements are true.

Question 8

Which of the following statements is false?

Accepted Answer

A)  Python applies the operators in arithmetic expressions according to the rules of operator xe "precedence"precedence, which are generally the same as those in algebra. 
B)  Parentheses have the xe "highest level of precedence"highest level of precedence, so expressions in xe "parentheses:()"parentheses evaluate first-thus, parentheses may force the xe "order of evaluation"order of evaluation to occur in any sequence you desire. 
C)  In expressions with nested parentheses, such as (a / (b - c)), the expression in the xe "innermost pair of parentheses"innermost parentheses (that is, b - c) evaluates first. 
D)  If an expression contains several exponentiation operations, Python applies them from left to right. 
A)  Python applies the operators in arithmetic expressions according to the rules of operator xe "precedence"precedence, which are generally the same as those in algebra. 
B)  Parentheses have the xe "highest level of precedence"highest level of precedence, so expressions in xe "parentheses:()"parentheses evaluate first-thus, parentheses may force the xe "order of evaluation"order of evaluation to occur in any sequence you desire. 
C)  In expressions with nested parentheses, such as (a / (b - c)), the expression in the xe "innermost pair of parentheses"innermost parentheses (that is, b - c) evaluates first. 
D)  If an expression contains several exponentiation operations, Python applies them from left to right.

Question 9

The chained comparison 3 < y <= 11 is false for which of the following values of y:

Accepted Answer

A)  11 
B)  10 
C)  4 
D)  3 
A)  11 
B)  10 
C)  4 
D)  3

Question 10

Which of the following statements is false?

Accepted Answer

A)  When we say that Python applies certain operators from xe "left-to-right evaluation[left to right]"left to right, we are referring to the operators' grouping. 
B)  In the following expression, the addition operators (+) group as if we parenthesized the expression as a + (b + c). 
C)  All Python operators of the same precedence group left-to-right except for the exponentiation operator (**), which groups right-to-left. 
D)  You can use xe "redundant parentheses"redundant parentheses to group subexpressions to make expressions clearer. For example, the second-degree polynomial y = a * x ** 2 + b * x + c
Can be parenthesized, for clarity, as
Y = (a * (x ** 2)) + (b * x) + c 
A)  When we say that Python applies certain operators from xe "left-to-right evaluation[left to right]"left to right, we are referring to the operators' grouping. 
B)  In the following expression, the addition operators (+) group as if we parenthesized the expression as a + (b + c). 
C)  All Python operators of the same precedence group left-to-right except for the exponentiation operator (**), which groups right-to-left. 
D)  You can use xe "redundant parentheses"redundant parentheses to group subexpressions to make expressions clearer. For example, the second-degree polynomial y = a * x ** 2 + b * x + c
Can be parenthesized, for clarity, as
Y = (a * (x ** 2)) + (b * x) + c

Question 11

Which of the following statements is false?

Accepted Answer

A)  A line that begins with the hash character (#) is a comment. 
B)  If a line has a comment on it, that comment must begin the line with a hash character (#). 
C)  Comments do not cause the computer to perform any action when the code executes. 
D)  The xe "Style Guide for Python Code:spaces around binary operators"Style Guide for Python Code states that each script should start with a xe "docstring"docstring that explains the script's purpose, 
A)  A line that begins with the hash character (#) is a comment. 
B)  If a line has a comment on it, that comment must begin the line with a hash character (#). 
C)  Comments do not cause the computer to perform any action when the code executes. 
D)  The xe "Style Guide for Python Code:spaces around binary operators"Style Guide for Python Code states that each script should start with a xe "docstring"docstring that explains the script's purpose,

Question 12

Which of the following statements is true?

Accepted Answer

A)  The if statement uses a xe "condition"condition to decide whether to execute a statement (or a group of statements). 
B)  IPython interactive mode is helpful for executing brief code snippets and seeing immediate results. 
C)  When you have many statements to execute as a group, you typically write them as a script stored in a file with the .py (short for Python) extension. 
D)  All of the above statements are true. 
A)  The if statement uses a xe "condition"condition to decide whether to execute a statement (or a group of statements). 
B)  IPython interactive mode is helpful for executing brief code snippets and seeing immediate results. 
C)  When you have many statements to execute as a group, you typically write them as a script stored in a file with the .py (short for Python) extension. 
D)  All of the above statements are true.

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

What does the int function attempt to do in the following code? value = input('Enter an integer: ') Value = int(value)

Assume x is 3, y is 7.1 and z is '11.5'. Which of the following statements is incorrect?

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

Which of the following statements is false?

Which of the following statements is false?

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

Which of the following statements is false?

The chained comparison 3 < y <= 11 is false for which of the following values of y:

Which of the following statements is false?

Which of the following statements is false?

Which of the following statements is true?

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 a), b) or c) is false?

What does the int function attempt to do in the following code? value = input('Enter an integer: ') Value = int(value)

Assume x is 3, y is 7.1 and z is '11.5'. Which of the following statements is incorrect?

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

Which of the following statements is false?

Which of the following statements is false?

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

Which of the following statements is false?

The chained comparison 3 < y <= 11 is false for which of the following values of y:

Which of the following statements is false?

Which of the following statements is false?

Which of the following statements is true?

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