npatel221 / python_projects

This repository contains several projects that I have completed in Python to enhance and hone my python programming skills.

Python_Projects

This repository contains several projects that I have completed in Python to enhance and hone my python programming skills.

Find prime factors

Challenge: Write a Python function to find all prime factors.
Input: integer value
Output: list of prime factors
Sample Input & Output:

>>> get_prime_factors(630)
Input: 630
Output: [2, 3, 3, 5, 7]
Explanation: 2 x 3 x 3 x 5 x 7 = 630

>>> get_prime_factors(13)
Input: 13
Output: [13]
Explanation: 13 x 1 = 13; 13 itself is a prime number

Identify a palindrome

Challenge: Write a Python function to determine if a given string is a palindrome.

• Only consider letters (A-Z)
  
• Ignore case (for example, 'A'=='a')
  

Input: string to evaluate
Output: boolean value
Sample Input & Output:

>>> is_palindrome("hello world")
Input: "hello world"
Output: False
Explanation: The Input string is not a palindrome

>>> is_palindrome("Go hand a salami - I'm a lasagna hog.")
Input: "Go hand a salami - I'm a lasagna hog."
Output: True
Explanation: Once the case, punctuation and other characters are removed from the string, the string becomes 'gohandasalamiimalasagnahog' which is a palindrome string.

Sort a string

Challenge: Write a Python function to sort the words in a string.

• Ignore case when sorting. For example: "The" is same as "the".
  
• Words in the output strings should have same case as input.
  

Input: string of words, separated by spaces
Output: string of words, sorted alphabetically
Sample Input & Output:

>>> sort_words('string of words')
Input: 'string of words'
Output: 'of string words'
Explanation: sorted alphabetically.

>>> sort_words('banana ORANGE apple')
Input: 'banana ORANGE apple'
Output: 'apple banana ORANGE'
Explanation: sorted alphabetically and case ignored

Find all list items

Challenge: Write a Python function to index all items in a list.

• Keep in mind that lists can contain other lists.
  

Input: list to search, value to search for
Output: list of indices
Sample Input & Output:

>>> example = [[[1, 2, 3], 2, [1, 3]], [1, 2, 3]]
>>> index_all(example, 2)
Input: ([[[1, 2, 3], 2, [1, 3]], [1, 2, 3]], 2)
Output: [[0, 0, 1], [0, 1], [1, 1]]

Play the waiting game

Challenge: Write a Python function to play a pulse pounding game of patience, known as the waiting game. When the player runs the waiting game program it should print a message for them to wait a random amount of time, somewhere between 2 to 4 seconds. When the player presses Enter, that starts a timer. The player's goal is to wait the specified number of seconds and then press Enter again. That displays the elapsed time, along with a message about whether the player was too fast, too slow, or right on target.

Input: 1st Enter keypress will start timer and 2nd Enter keypress will stop the timer.
Output: Display the target time to user then display the reaction time along with time difference between the target and the actual.
Sample Input & Output:

>>> waiting_game()

Your target time is 4 seconds.
---Press Enter to Begin---

...Press Enter again after 4 seconds...

Elapsed time: 4.213 seconds (0.213 seconds too slow)

Save a dictionary

Challenge:

• Write a Python function to save a dictionary object to a file.
  
• Write another Python function to load a saved dictionary object from a file and display it.
  

Input:

• save_dict: dictionary to save, output file path as parameters.
  
• load_dict: file path to read the stored dictionary as parameter.
  

Output:

• save_dict: output file with saved dictionary object.
  
• load_dict: retrieved dictionary object.
  

Sample Input & Output:

>>> save_load_dictionary()
Input: 
dict_for_save =	{"brand": "Ford", "model": "Mustang", "year": 1964}
file_path = current_directory + "carDictionary"

save_dict(dict_for_save, file_path)
load_dict(fpath)

Output:
Dictionary saved successfully to: /home/carDictionary
Dictionary loaded successfully
{'brand': 'Ford', 'model': 'Mustang', 'year': 1964}
Is the loaded dictionary same as the dictionary which was written to the file: True

Set an alarm

Challenge: Write a Python function to play a sound and print a message at a set time.
Input: alarm time, sound file, message.
Output: print a message indicating the alarm time, then alarm message with alarm sound.
Sample Input & Output:

>>> set_alarm(time.time()+1, 'alarm.wav', 'Wake up!')
Input: time.time()+1, 'alarm.wav', 'Wake up!'

Output: 
Alarm set for Sat Nov 14 15:08:50 2020
Wake up!
<Playing sound file>

Send an email

Challenge: Write a Python function to send a basic email notification.
Input: receiver email address, subject line, message body.
Output: email sent to the receiver's email address with the subject line and message body.
Sample Input & Output

Input: "[email protected]", "Python: Hello Email!", "Hi, this is an email from Python program."
Output:
        To: [e-mail]
        From: [e-mail]
        Subject: Python: Hello Email!
        Message: Hi, this is an email from Python

Simulate dice

Challenge: Write a Python function to determine the probability of certain outcomes when rolling dice. Use Monte Carlo method with 1 million simulations to get a stastically significant result.
Input: variable number of arguments for sides of dice.
Output: table of probability for each possible outcome.
Sample Input & Output:

>>> roll_dice(4,6,6)
Outcome Probability
3	0.69%
4	2.08%
5	4.18%
6	6.94%
7	9.71%
8	12.52%
9	13.87%
10	13.87%
11	12.56%
12	9.69%
13	6.94%
14	4.16%
15	2.09%
16	0.70%

Count unique words

Challenge: Write a python function to count the number of unique words and how often each occures. Note:

• Ignore case
  
  • e.g. "The" is same as "the"
    
• Words contain:
  • Letters
    
  • Numbers
    
  • Apostrophes
    
  • Hyphens
    

Input: path to a text file.
Output: print message with:

• total number of words
  
• top 20 most frequent words
  
• number of occurrences for top 20
  

Sample Input & Output:

>>> count_words('input.txt')
Total Words: 473

Top 20 Words:
TEXT             13
CHALLENGE        11
WORDS            9
YOUR             5
FUNCTION         5
...              ...

Generate a password

Challenge: Write a python function to generate passphrases using dicemware. Go to https://www.diceware.com to get the diceware list.
Input: Number of words in passphrase.
Output: String of random words, separated by spaces.
Sample Input & Output:

>>> generate_passphrase(5)
'vice fame tango abide verb'

Merge CSV Files

Challenge: Write a Python function to merge multiple CSV files. Note: your function must be robust enough to merge CSV files even if the headers don't match or if the header order is different.
Input: list of input files, output file path.
Output: a single .csv file containing all merged information.
Sample Input & Output:

>>> merge_csv(['class1.csv','class2.csv'], 'all_students.csv')

Solve a Sudoku

Challenge: Write a Python function to solve a sudoku puzzle. Use a standard 9x9 grid.
Input: 2D List representing the puzzle. 0 denotes an empty space.
Output: solved Sudoku puzzle with a 2D list.
Sample Input & Output:

>>> puzzle = [[5,3,0,0,7,0,0,0,0],
              [6,0,0,1,9,5,0,0,0],
              [0,9,8,0,0,0,0,6,0],
              [8,0,0,0,6,0,0,0,3],
              [4,0,0,8,0,3,0,0,1],
              [7,0,0,0,2,0,0,0,6],
              [0,6,0,0,0,0,2,8,0],
              [0,0,0,4,1,9,0,0,5],
              [0,0,0,0,8,0,0,7,9]]
>>> solve_sudoku(puzzle)
             [[5,3,4,6,7,8,9,1,2],
              [6,7,2,1,9,5,3,4,8],
              [1,9,8,3,4,2,5,6,7],
              [8,5,9,7,6,1,4,2,3],
              [4,2,6,8,5,3,7,9,1],
              [7,1,3,9,2,4,8,5,6],
              [9,6,1,5,3,7,2,8,4],
              [2,8,7,4,1,9,6,3,5],
              [3,4,5,2,8,6,1,7,9]]

Build a ZIP archive

Challenge: Write a Python function build a ZIP archive. Note: ZIP archive should maintain folder structure relative to top-level directory.
Input: It should accept the following: input directory path, list of file extensions, output file path.
Output: a ZIP file.
Sample Input & Output:

>>> zip_all('.\\my_stuff',['.jpg','.txt'],'my_stuff.zip')
Output -> single my_stuff.zip file containing all .jpg and .txt file from my_stuff directory

Download sequential files

Challenge: Write a Python function to download and save a sequence of files. Note: it is not specified inside the function, how many images to download, so it should continue to download all available sequential files.
Input: It should take 2 inputs: URL for first item, output directory path.
Output: Automatically download all available sequential files from the internet and store it in the output directory.
Sample Input & Output:

>>> download_files('http://699340.youcanlearnit.net/image001.jpg','.\images')

Successfully downloaded
http://699340.youcanlearnit.net/image001.jpg

Successfully downloaded
http://699340.youcanlearnit.net/image002.jpg

Successfully downloaded
http://699340.youcanlearnit.net/image003.jpg
...
...
...
Successfully downloaded
http://699340.youcanlearnit.net/image050.jpg

Could not retrieve
http://699340.youcanlearnit.net/image051.jpg