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                                     Python Data Analysis Skill Test Answers 

1. What is the output of the following code?

value = "Sequence of Characters"

print(type(value) )

• <type 'varchar'>
• <class 'char'>
• <class 'str'>
• <type 'Str'>

2. What is a commonality between Python-centric integrated development environments (IDEs) and other general code editors used for software development?

• Both run on native-applications
• Both support easy debugging
• Both provide easy code customization without any dependencies
• Both support rich features such as version control system support and syntax highlighting

3. You are designing a function foo that will be called by other applications. Because the functionality provided by your function is applicable for several -applications, the function must accept a variable list of keyworded parameters. How would you write the function signature to comply with the aforementioned needs

• def foo(bar = "1", *args)
• def foo(bar = "1", default = "2")
• def foo(*args)
• def foo(**kwargs)

4. What is the output of the following code?

def foo(n): if n==0 or n==1: return 1 else: return n*foo(n1) foo(5)

• 24
• 120
• Recursion error
• 720

5. What is the difference between %matplotlib inline and %matplotlib notebook?

•  %matplotlib notebook adds interactivity to the plots created for that notebook, while %matplotlib inline sets the plots to be displayed right below the code cell that -produced them.
• %matplotlib notebook makes plots created for that notebook responsive, while %matplotlib inline sets the plots to be displayed inline, right above the code cell that -produced them.
• %matplotlib inline adds interactivity to the plots created for that notebook, while %matplotlib notebook sets the plots to be displayed right below the code cell that -produced them
• %matplotlib notebook makes plots created for that notebook responsive, while %matplotlib inline sets the plots to be displayed inline, replacing the code cell that -produced them

6. If a default port is unavailable, how do you set up a custom port (9009) to launch Jupyter Notebook?

• jupyter notebook > port==9009
• jupyter notebook port==9009
• jupyter notebook > port 9009
• jupyter notebook --port 9009

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7. You need help implementing a classification model using support vector machines in Python. Which library documentation would be the most adequate resource to get -more information about your task

• SciPy documentation
• Comprehensive R Archive Network (CRAN)
• Pandas documentation
• Scikit-learn documentation

8. Given the word "python", how would you select only the consonants found in the word? (The result is as shown below)

['p','y','t','h','n']

•  [] only_consonants =[]

           for i in "python":

    if i not in ['a','e','i','o','u']:

        continue

    else:

        only_consonants.append(i)

print (only_consonants)

•  [] only_consonants = [ ]

           for i in "python":

    if i not in ["a","e","i","o","u"]:

        break

    else:

        only_consonants.append(i)

print (only_consonants)

• [] only_consonants = [ ]

          for i in "python":

    if i not in ['p','y','t','h','n']:

        continue

    else:

        only_consonants.append(i)

print (only_consonants)

• [x] only consonants = [ ]

          for i in "python":

          if i not in ["a","e","i","o","u"]:

          continue

       else:

         only_consonants.append(i)

        print (only_consonants)

9. Which method reads data from files in Python?

• get()
• copy()
• getlines()
• readlines()

10. You are working on a method available under the Pandas package to detect null values in a CSV file. You spot a bug in the package's method which is also treating blank -values as null. To add the bug to the official Pandas issue tracker, what should be your next step

• Report the bug on GitHub by raising an issue and also suggesting a required fix under the package repository.
• Report the bug on Kaggle by starting a discussion under the package tag and suggesting a fix.
• Report the bug on Stack Overflow by creating a question under the package tag and answering it with the fix.
• Create a blogpost on Medium mentioning the bug under the package tag along with its fix.

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11. You have lists A and B.

A = [529, 144, 169, 729] B = [23, 12, 13, 27] How can you create B from A

• from arithmetic import square_root
• from mathematics import SquareRoot
• from math import SquareRoot
• from math import sqrt

12. Which code snippet stores multi-line string in the variable string?

• string ="""This is a string. Second line of the string."""
• """String = 'This is a string. Second line of the string.'"""
• string=""This is a string. \nSecond line of the string.""
• string = 'This is a string.\n Second line of the string.'

13. How is a tuple depicted in Python?

• ['a','b','c','d']
• ('a','b','c','d')
• {'a':2,'b':1,'c':2}
• {'a','b','c'}

14. Which statement is true about the checkpoint of a Jupyter notebook?

• The created checkpoints holds data from code cells excluding the data from markdown cells.
• Jupyter Notebook automatically creates checkpoints from time to time as well as provides manual functionality.
• Jupyter Notebook provides no option for user-defined checkpoints.
• The created checkpoints holds the data in the XML format.

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15. What will help you create a one-line anonymous function?

• def
• main
• int func
•  lambda

16. You must execute a code statement multiple times as long as a certain condition remains valid. What control structure do you select?

• do while
• while
• for
• if else

17. Which code snippet will cause an error in the code?

• [] Boolean_result = True

         print (Boolean_result)

• [] one_result = 100

          print (one_result)

•         1_result=100

                  print(1_result)

• [] sample_string = "Hello World!"

          print(sample_string)

18. You are required to append world! to the variable string and store it in the same variable. What would you choose?

string = "Hello"

• string = string + "World!"
• string.add("World!")
• string = "Hello World!"
• tring.append("World!")