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Path: blob/master/03-Methods and Functions/08-Functions and Methods Homework.ipynb
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Kernel: Python 3

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Functions and Methods Homework

Complete the following questions:

Write a function that computes the volume of a sphere given its radius.

The volume of a sphere is given as $$\frac{4}{3} πr^3$$

In [1]:

def vol(rad):
    pass

In [2]:

# Check
vol(2)

Out[2]:

33.49333333333333

Write a function that checks whether a number is in a given range (inclusive of high and low)

In [3]:

def ran_check(num,low,high):
    pass

In [4]:

# Check
ran_check(5,2,7)

Out[4]:

5 is in the range between 2 and 7

If you only wanted to return a boolean:

In [5]:

def ran_bool(num,low,high):
    pass

In [6]:

ran_bool(3,1,10)

Out[6]:

True

Write a Python function that accepts a string and calculates the number of upper case letters and lower case letters.

Sample String : 'Hello Mr. Rogers, how are you this fine Tuesday?'
Expected Output : 
No. of Upper case characters : 4
No. of Lower case Characters : 33

HINT: Two string methods that might prove useful: .isupper() and .islower()

If you feel ambitious, explore the Collections module to solve this problem!

In [7]:

def up_low(s):
    pass

In [8]:

s = 'Hello Mr. Rogers, how are you this fine Tuesday?'
up_low(s)

Out[8]:

Original String :  Hello Mr. Rogers, how are you this fine Tuesday?
No. of Upper case characters :  4
No. of Lower case Characters :  33

Write a Python function that takes a list and returns a new list with unique elements of the first list.

Sample List : [1,1,1,1,2,2,3,3,3,3,4,5]
Unique List : [1, 2, 3, 4, 5]

In [9]:

def unique_list(lst):
    pass

In [10]:

unique_list([1,1,1,1,2,2,3,3,3,3,4,5])

Out[10]:

[1, 2, 3, 4, 5]

Write a Python function to multiply all the numbers in a list.

Sample List : [1, 2, 3, -4]
Expected Output : -24

In [11]:

def multiply(numbers):  
    pass

In [12]:

multiply([1,2,3,-4])

Out[12]:

-24

Write a Python function that checks whether a word or phrase is palindrome or not.

Note: A palindrome is word, phrase, or sequence that reads the same backward as forward, e.g., madam,kayak,racecar, or a phrase "nurses run". Hint: You may want to check out the .replace() method in a string to help out with dealing with spaces. Also google search how to reverse a string in Python, there are some clever ways to do it with slicing notation.

In [13]:

def palindrome(s):
    pass

In [14]:

palindrome('helleh')

Out[14]:

True

Hard:

Write a Python function to check whether a string is pangram or not. (Assume the string passed in does not have any punctuation)

Note : Pangrams are words or sentences containing every letter of the alphabet at least once.
For example : "The quick brown fox jumps over the lazy dog"

Hint: You may want to use .replace() method to get rid of spaces.

Hint: Look at the string module

Hint: In case you want to use set comparisons

In [15]:

import string

def ispangram(str1, alphabet=string.ascii_lowercase):
    pass

In [16]:

ispangram("The quick brown fox jumps over the lazy dog")

Out[16]:

True

In [17]:

string.ascii_lowercase

Out[17]:

'abcdefghijklmnopqrstuvwxyz'

Functions and Methods Homework

Hard:

Great Job!

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