 '''
********DAY 7********
Python coding question:

Define a function called myfunc that takes a string,
and returns a matching string where every even letter is uppercase, and every odd letter is lowercase. 
Desired output:
myfunc('aNiMaL')-->True
Ans:-

def myfunc(str):
    h=[]
    for i in range(0,len(str)):
        if i%2==0:
            h.append(str[i].lower())
        else:
            h.append(str[i].upper())
        if h[i]!=str[i]:
            return False
    return True
if __name__ == "__main__":
    print(myfunc('aNiMaL'))
	
'''	
print('Step to build our logic')
print('1. Pass a string to function')
print('2. Take a one empty list')
print('3. Create a for loop to move over whole input string.')
print('4. Add if else condition for to check even odd number')
print('5. Append each character of input string')
print('6. Make it as Upper and lower depend on its position')
print('7. Compare each character of input string with converted  list')
print('8. If all character from input string doesn't match')
print('with the converted list then return false else true')

print('Below conecpts are used:')
print('1. __name__ is a built-in variable which evaluates')
print('to the name of the current module.')
print('2. List is group of element which can enclose')
print('within square braces and it can be changeable.')
print('3. For loop:- Looping is used to execute')
print('one more statement repeatedly.')
print('4. If-else is used to check condition')
print('5. append method is to add element into the list')
print('6 Upper and lower case methods are used to change case')
print('7. The True and False keyword is used as')
print('the Boolean true and false value respectively')

created 2 years ago

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import sys
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print("Hello "+ name)

About Python

Python is a very popular general-purpose programming language which was created by Guido van Rossum, and released in 1991. It is very popular for web development and you can build almost anything like mobile apps, web apps, tools, data analytics, machine learning etc. It is designed to be simple and easy like english language. It's is highly productive and efficient making it a very popular language.

Tutorial & Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition IF-ELSE is used.

if conditional-expression
    #code
elif conditional-expression
    #code
else:
    #code

Note:

Indentation is very important in Python, make sure the indentation is followed correctly

2. For:

For loop is used to iterate over arrays(list, tuple, set, dictionary) or strings.

Example:

mylist=("Iphone","Pixel","Samsung")
for i in mylist:
    print(i)

3. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while condition  
    #code

Collections

There are four types of collections in Python.

1. List:

List is a collection which is ordered and can be changed. Lists are specified in square brackets.

Example:

mylist=["iPhone","Pixel","Samsung"]
print(mylist)

2. Tuple:

Tuple is a collection which is ordered and can not be changed. Tuples are specified in round brackets.

Example:

myTuple=("iPhone","Pixel","Samsung")
print(myTuple)

Below throws an error if you assign another value to tuple again.

myTuple=("iPhone","Pixel","Samsung")
print(myTuple)
myTuple[1]="onePlus"
print(myTuple)

3. Set:

Set is a collection which is unordered and unindexed. Sets are specified in curly brackets.

Example:

myset = {"iPhone","Pixel","Samsung"}
print(myset)

4. Dictionary:

Dictionary is a collection of key value pairs which is unordered, can be changed, and indexed. They are written in curly brackets with key - value pairs.

Example:

mydict = {
    "brand" :"iPhone",
    "model": "iPhone 11"
}
print(mydict)

Supported Libraries

Following are the libraries supported by OneCompiler's Python compiler

Name	Description
NumPy	NumPy python library helps users to work on arrays with ease
SciPy	SciPy is a scientific computation library which depends on NumPy for convenient and fast N-dimensional array manipulation
SKLearn/Scikit-learn	Scikit-learn or Scikit-learn is the most useful library for machine learning in Python
Pandas	Pandas is the most efficient Python library for data manipulation and analysis
DOcplex	DOcplex is IBM Decision Optimization CPLEX Modeling for Python, is a library composed of Mathematical Programming Modeling and Constraint Programming Modeling