chapter 12

Advance python

# try 
'''
while(True):
    print("press q to quit")
    a =  input("Enter a number:")
    if a == 'q':
        break
    try:
        print("trying...")
        a = int(a)
        if a>6 :    
            print("you enter a number greater than 6")
    except Exception as e:
        print(f"your input required in an error : {e}")
print("thanks")
'''

# handling different exception
'''
try:
    a = int(input("enter a number: "))
    c = 1/a
    print(c)
except ValueError as e:
    print("Exception1 occured")
    print(e)

except ZeroDivisionError as e:
    print("Exception2 occured")
    print(e)
print("Thanks")
'''


# raising exception

#try with else
'''
try:
    i = int(input('enter nuber'))
    c = 1/i
except Exception as e:
    print(e)
else:
    print("successful")

'''

# try with finally
'''
try:
    i = int(input('enter nuber'))
    c = 1/i
except Exception as e:
    print(e)
finally:
    print("Done")
'''


# Globle variable 
'''
a = 54 #Globle variable
def func1():
    global a
    print(f"Print statement 1: {a}")
    a = 3 # local variable if globle keyword is not used
    print(f"Print statement 2: {a}")

func1()
print(f"Print statement 3: {a}")
'''


# enumerate function
'''
list1 = [1,2,4,False, 'onam']

# index = 0
# for item in list1:
#     print(item,index)
#     index += 1

for index, item in enumerate(list1):
    print(item,index)
'''


# List comprehension

a = [2,1,4,5,67,65,43,88,92,8]
# b =[]
# for item in a:
#     if item %2 == 0:
#         b.append(item)
# print(b)

# shortcut to write the above code
b = [i for i in a if i % 2 ==0]
print(b)