Problem Solving And Python Programming Set 18

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This set of Problem Solving and Python Programming Multiple Choice Questions & Answers (MCQs) focuses on Problem Solving And Python Programming Set 18

Q1 | Which of the following is not an exception handling keyword in Python?
  • try
  • except
  • accept
  • finally
Answer: accept
Explaination:
the keywords ‘try’, ‘except’ and ‘finally’ are exception handling keywords in python whereas the word ‘accept’ is not a keyword at all.
Q2 | )) type(g)
  • class <’loop’>
  • class <‘iteration’>
  • class <’range’>
  • class <’generator’>
Answer: class <’generator’>
Explaination:
another way of creating a generator is to use parenthesis. hence the output of the code shown above is: class<’generator’>.
Q3 | ]
  • nameerror
  • valueerror
  • indexerror
  • typeerror
Answer: indexerror
Explaination:
the snippet of code shown above throws an index error. this is because the index of the list given in the code, that is, 3 is out of range. the maximum index of this list is 2.
Q4 | ]
  • indexerror
  • nameerror
  • typeerror
  • valeerror
Answer: nameerror
Explaination:
the expression shown above
Q5 | + '3'
  • nameerror
  • indexerror
  • valueerror
  • typeerror
Answer: typeerror
Explaination:
the line of code shown above will result in a type error. this is because the operand ‘+’ is not supported when we combine the data types ‘int’ and ‘str’. sine this is exactly what we have done in the code shown above, a type error is thrown.
Q6 | 43')
  • importerror
  • valueerror
  • typeerror
  • nameerror
Answer: valueerror
Explaination:
the snippet of code shown above results in a value error. this is because there is an invalid literal for int() with base 10: ’65.43’.
Q7 | )
  • valueerror
  • invalid
  • 6
  • valueerror(“invalid”)
Answer: 6
Explaination:
in the code shown above, since the value passed as an argument to the function is between 1 and 12 (both included), hence the output is the value itself, that is 6. if the value had been above 12 and less than 1, a valueerror would have been thrown.
Q8 | Which of the following statements is true?
  • the standard exceptions are automatically imported into python programs
  • all raised standard exceptions must be handled in python
  • when there is a deviation from the rules of a programming language, a semantic error is thrown
  • if any exception is thrown in try block, else block is executed
Answer: the standard exceptions are automatically imported into python programs
Explaination:
when any exception is thrown in try block, except block is executed. if exception in not thrown in try block, else block is executed. when there is a deviation from the rules of a programming language, a
Q9 | Which of the following is not a standard exception in Python?
  • nameerror
  • ioerror
  • assignmenterror
  • valueerror
Answer: assignmenterror
Explaination:
nameerror, ioerror and valueerror are standard exceptions in python whereas assignment error is not a standard exception in python.
Q10 | Syntax errors are also known as parsing errors.
  • true
  • false
Answer: true
Explaination:
syntax errors are known as parsing errors. syntax errors are raised when there is a deviation from the rules of a language. hence the statement is true.
Q11 | An exception is                          
  • an object
  • a special function
  • a standard module
  • a module
Answer: an object
Explaination:
an exception is an object that is raised by a function signaling that an unexpected situation has occurred, that the function itself cannot handle.
Q12 |                                                exceptions are raised as a result of an error in opening a particular file.
  • valueerror
  • typeerror
  • importerror
  • ioerror
Answer: ioerror
Explaination:
ioerror exceptions are raised as a result of an error in opening or closing a particular file.
Q13 | Which of the following blocks will be executed whether an exception is thrown or not?
  • except
  • else
  • finally
  • assert
Answer: finally
Explaination:
the statements in the finally block will always be executed, whether an exception is thrown or not. this clause is used to close the resources used in a code.
Q14 | Which of these definitions correctly describes a module?
  • denoted by triple quotes for providing the specification of certain program elements
  • design and implementation of specific functionality to be incorporated into a program
  • defines the specification of how it is to be used
  • any program that reuses code
Answer: design and implementation of specific functionality to be incorporated into a program
Explaination:
the term “module” refers to the implementation of specific functionality to be incorporated into a program.
Q15 | Which of the following is not an advantage of using modules?
  • provides a means of reuse of program code
  • provides a means of dividing up tasks
  • provides a means of reducing the size of the program
  • provides a means of testing individual parts of the program
Answer: provides a means of reducing the size of the program
Explaination:
the total size of the program remains the same regardless of whether modules are used or not. modules simply divide the program.
Q16 | Program code making use of a given module is called a              of the module.
  • client
  • docstring
  • interface
  • modularity
Answer: client
Explaination:
program code making use of a given module is called the client of the module. there may be multiple clients for a module.
Q17 |              is a string literal denoted by triple quotes for providing the specifications of certain program elements.
  • interface
  • modularity
  • client
  • docstring
Answer: docstring
Explaination:
docstring used for providing the specifications of program elements.
Q18 | Which of the following is true about top- down design process?
  • the details of a program design are addressed before the overall design
  • only the details of the program are addressed
  • the overall design of the program is addressed before the details
  • only the design of the program is addressed
Answer: the overall design of the program is addressed before the details
Explaination:
top-down design is an approach for deriving a modular design in which the overall design.
Q19 | In top-down design every module is broken into same number of submodules.
  • true
  • false
Answer: false
Explaination:
in top-down design every module can even be broken down into different number of submodules.
Q20 | All modular designs are because of a top- down design process.
  • true
  • false
Answer: false
Explaination:
the details of the program can be addressed before the overall design too.
Q21 | Which of the following is not a valid namespace?
  • global namespace
  • public namespace
  • built-in namespace
  • local namespace
Answer: public namespace
Explaination:
during a python program execution, there are as many as three namespaces – built-in namespace, global namespace and local namespace.
Q22 | Which of the following is false about “import modulename” form of import?
  • the namespace of imported module becomes part of importing module
  • this form of import prevents name clash
  • the namespace of imported module becomes available to importing module
  • the identifiers in module are accessed as: modulename.identifier
Answer: the namespace of imported module becomes part of importing module
Explaination:
in the “import modulename” form of import, the namespace of imported module becomes available to, but not part of, the importing module.
Q23 | Which of the following is false about “from-import” form of import?
  • the syntax is: from modulename import identifier
  • this form of import prevents name clash
  • the namespace of imported module becomes part of importing module
  • the identifiers in module are accessed directly as: identifier
Answer: this form of import prevents name clash
Explaination:
in the “from-import” form of import, there may be name clashes because names of the imported identifiers aren’t specified along with the module name.
Q24 | Which of the statements about modules is false?
  • in the “from-import” form of import, identifiers beginning with two underscores are private and aren’t imported
  • dir() built-in function monitors the items in the namespace of the main module
  • in the “from-import” form of import, all identifiers regardless of whether they are private or public are imported
  • when a module is loaded, a compiled version of the module with file extension .pyc is automatically produced
Answer: in the “from-import” form of import, all identifiers regardless of whether they are private or public are imported
Explaination:
in the “from-import” form of import, identifiers beginning with two underscores are private and aren’t imported.
Q25 | ))
  • 120
  • nothing is printed
  • error, method factorial doesn’t exist in math module
  • error, the statement should be: print(factorial(5))
Answer: error, the statement should be: print(factorial(5))
Explaination:
in the “from-import” form of import, the imported identifiers (in this case factorial()) aren’t specified along with the module name.
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