Python Day String Functions,Looping-For,ifelse conditions and Task

Find():
Searches the string for a specified value and returns the position of where it was found.
Ex:

txt = "Hello, welcome to my world."

x = txt.find("welcome")

print(x)

Output:

7

So welcome is in 7th position as per indexing.If any other word is given which is not defined then the result will be -1.

Note:In the above example if index function is used instead of find,then it will display "valueerror: substring not found".If defined then output will be same like find function.

Looping:
For loop:
Ex:1

txt = '1234'

for num in txt:
    print(num,end=' ')

Output:

1 2 3 4

Ex:2

name = input("Enter Name: ")
print(name)
for alphabet in name:
    print(alphabet, end='*') 

Output:

Enter Name: guru
guru
g*u*r*u*

Ifelse:
It runs the program with decision based on whether the statement is true or false.

Ex:

txt = '12a4'

for num in txt:
    if num>='0' and num<='9':
        print(num,end=' ')
    else:
        print('Not Decimal',end=' ')

Output:

1 2 Not Decimal 4 

In above example 1,2,4 are decimal but a is not a decimal so in output it shows not decimal as per else condition.

Task:

lakshmi Pritha
guru Prasanna
guhanraja
varatharajan

Find:
1: Names starting with letter 'g'
2: Names endings with 'a'
3: Names having space in between
4: Names having more than 9 letters

name=input("Enter names: ")
names=(name).split(",")

for letter in names:
    if letter.startswith('g'):
        print("Names starts with g are: ",letter)
    else :
        letter.endswith('a')
        print("Names end with a are: ",letter)
for space in names:
    for word in space:
        if word==' ':
            print("Names with space: ",space)
        else:
            continue
for character in names:
    if len(character)>9:
        print("Names with more than 9 letters: ",character)

output:

Enter names: guru prasanna,guhanraja,lakshmi pritha,varatharajan
Names starts with g are:  guru prasanna
Names starts with g are:  guhanraja
Names end with a are:  lakshmi pritha
Names end with a are:  varatharajan
Names with space:  guru prasanna
Names with space:  lakshmi pritha
Names with more than 9 letters:  guru prasanna
Names with more than 9 letters:  lakshmi pritha
Names with more than 9 letters:  varatharajan

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