Practice Code: 051

Write a program to return the sum of a series of sequential numbers. The sequence can be
a. 1,2,3,4,5.......n
b. 1,3,5,7,9,11,.....n
c. 2,4,6,8,10,12.....n
d. 35,42,49,56,63....n

Note: Do not use a loop to add the numbers, if that is what your idea is, not use a sum() or similar function to add them.

Write an algorithm that optimally finds the sum total.

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#PracticeCode: 0041
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Task:
Create a program in which a word or line is given as input and you have to print the number of letters, numbers and any special character (Not includes space) in it.

Sample :-

input - Python 3.8.1
output - Letters = 6
Numbers = 3
Special Char = 2

GOOD LUCK!

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#PracticeCode: 0042
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Task:
Create a program to take input a array of numbers and required sum. Now you have to print the lowest numbers from the array which sums to the required sum given as input.

Sample :-

input - [10,0,-1,20,25,30]
Required Sum - 45
output - [20,25]

GOOD LUCK!

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#PracticeCode: 0043
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Task:
Create a program to check validity of password given input by the users.
Conditons :

* At least 1 letter between [a-z] and 1 letter between [A-Z].
* At least 1 number between [0-9].
* At least 1 character from [$#@].
* Minimum length 6 characters.
* Maximum length 16 characters.

GOOD LUCK!

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#PracticeCode: 0044
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Task:
Create a program to print alphabet "A" on Screen.

Sample :-

***
* *
* *
*****
* *
* *
* *

GOOD LUCK!

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#PracticeCode: 0045
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Task:
Create a program to take input a month and year and print number of days in it.

Sample :-

input - January, 2020
output - days = 31

GOOD LUCK!

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#PracticeCode: 0046
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Task:
Create a program to take input of all three sides of a triangle and then print the type of the triangle(equilateral, scalene, isosceles).

* Equilateral trinagle has all sides equal.

* Scalene triangle has all sides unequal.

* Isosceles triangle has two sides equal.

Sample :-

input -
a = 12
b = 8
c = 6

output - Scalene triangle

GOOD LUCK!

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#PracticeCode: 0047
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Task:
You have to create a program to join multiple dictionaries to a new dictionary.

Sample :-

d1 = { "a" : 23 , "b" : 45 }
d2 = { "c" : 54 , "d" : 67 }

output - new_dict = { "a" : 23 , "b" : 45 , "c" : 54 , "d" : 67 }

GOOD LUCK!

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#PracticeCode: 0047
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Task:
You have to create a program to join multiple dictionaries to a new dictionary.

Sample :-

d1 = { "a" : 23 , "b" : 45 }
d2 = { "c" : 54 , "d" : 67 }

output - new_dict = { "a" : 23 , "b" : 45 , "c" : 54 , "d" : 67 }

GOOD LUCK!

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#PracticeCode: 0048
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Task:
You have to create a program to create a dictionary. Take input of an integer (from 1 to n) and print the dictionary in (a , a**2) format.

Sample :-

Input - 4

Output - { 1 : 1 , 2 : 4 , 3 : 9 , 4 : 16}

GOOD LUCK!

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# Python Code to copy to Windows Clipboard

 Code

import win32clipboard

# set clipboard data
win32clipboard.OpenClipboard()
win32clipboard.EmptyClipboard()
win32clipboard.SetClipboardText('testing 123')
win32clipboard.CloseClipboard()

# get clipboard data
win32clipboard.OpenClipboard()
data = win32clipboard.GetClipboardData()
win32clipboard.CloseClipboard()
print data

#python #CodeSamples

Check if the file is empty or not

import os

file_path = 'mysample.txt'

# check if size of file is 0
if os.stat(file_path).st_size == 0:
    print('File is empty')
else:
    print('File is not empty')

#python #CodeSamples

The while Loop

while <expr>:
    <statement(s)>
    <break> #will take you out of the loop
    <statements>
    <continue>
    <statements>

<statements> #break will bring you here


Example:
x = 10
 while x > 0:
    x -= 1
    if x == 5:
        break
    if x == 8:
        continue #Don't print when its 8
    print(x)

print("outside loop")

#python #CodeSamples

Class accepting List as argument in init()

class myclass:
    def __init__(self, mylst = []):
        print(mylst)

names = ["hello", "python", "devs", "iGnani"] 
myclass(names)

#python #CodeSamples

Connecting to Amazon Redshift database and Inserting data

import psycopg2
con=psycopg2.connect(dbname= 'dbname', host='host', port= 'port', user= 'user', password= 'pwd')

#once the above code executes and connection is established
# create a cursor
cur = con.cursor()

#now you can execute select statements
cur.execute("SELECT * FROM employee;")

#Next you need to instruct Psycopg how to fetch your data
cur.fetchall()

#Finally, don't forget to close your cursor & connection
cur.close() 
conn.close()

#python #sampleCode #amazon #redshift

»»» Interactive Tools and Lessons «««

👉🏻 Computer Science Circles
👉🏻 How to Think Like a Computer Scientist, Interactive Edition
👉🏻 Interactive tutorials for scientific programming using Python
👉🏻 Problem Solving with Algorithms and Data Structures using Python
👉🏻 Thonny, Python IDE for begginners


#tools #lessons #python

Build a RESTful API with Flask - The TDD Way

Part 1
Part 2

#python #tutorial #flask

Python Data Science Handbook - Binder Colab

This repository contains the entire Python Data Science Handbook, in the form of (free!) Jupyter notebooks.


#python #ebook #jupyter #notebook

Web Scraping Tutorials

👉🏻 Intro To Web Scraping With Python
👉🏻 Intro to Web Scraping with Python and Beautiful Soup
👉🏻 Beautiful Soup Tutorial - Web Scraping in Python
👉🏻 Web Scraping With Python - Edureka
👉🏻 Web Scraping With Python using Beautiful Soup & Requests


#python #tutorial #webScraping #BeautifulSoup

Even More Python for Beginners: Data Tools by Microsoft

 Aspiring data-science and machine-learning developers now have more Microsoft-made free video tutorials to learn how to build software in Python, one of today's most popular and versatile programming languages.
The new More Python for Beginners series consists of 20 videos that run between two minutes and 15 minutes each. It covers working with files, lambdas  or 'anonymous functions', and object-oriented programming, and each tutorial is followed by a short demo video. The tutors also introduce some newer functionality to support asynchronous development through async/await.

https://www.youtube.com/playlist?list=PLlrxD0HtieHhHnCUVtR8UHS7eLl33zfJ-
#course #python #beginners