for loop & If,else condition

For loop

The for Loops in Python are a special type of loop statement that is used for sequential traversal. Python for loop is used for iterating over an iterable like a String, Tuple, List, Set, or Dictionary.

example :

name = 'varatharajan'

for alphabet in name:
    print(alphabet, end=' ')

result

v a r a t h a r a j a n

if,else

The if statement is the most simple decision-making statement. It is used to decide whether a certain statement or block of statements will be executed or not.
The elif keyword is Python's way of saying "if the previous conditions were not true, then try this condition".

example 1 :

a = 33
b = 200
if b > a:
  print("b is greater than a")

result
b is greater than a
example 2 :

txt = '12a4'

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

result
1 2 Not Decimal 4

Task :
name = input("Enter Name: ")
Lakshmi pritha
Guru prasanna
Guhanraja
Varatharajan

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

input

name1 = input("Enter the first name: ")
name2 = input("Enter the second name: ")
name3 = input("Enter the third name: ")
name4 = input("Enter the fourth name: ")
name = [name1, name2, name3, name4]

# Check if names start with 'G'
for letter in name:
    if letter[0]=='G':
        print(letter)

# Check if names end with 'a'
for alphabet in name:
    if alphabet[-1]=='a':
        print(alphabet)

# Check if names contain a space
for alpha in name:
    for space in alpha:
        if space==' ':
            print(alpha)

# Check if names are longer than 9 characters
for character in name:
    if len(character)>9:
        print(character)

Output

Enter the first name: Varatharajan Enter the second name: Guru prasanna Enter the third name: Lakshmi pritha Enter the fourth name: Guhanraja Guru prasanna Guhanraja Guru prasanna Lakshmi pritha Guhanraja Guru prasanna Lakshmi pritha Varatharajan Guru prasanna Lakshmi pritha