loops.ipynb

Kernel: Python 3

If else loops & Functions

CONDITIONAL Operators

'''a = [3,4,5]
b = [3,4,5]
x=4
print("x==2 ::" ,x==2)
print("x==3 ::" ,x==3)
print("x>3  ::" ,x>3)
print("x<3  ::",x<3)
print(" Use of '=' OPERATOR :", a==b)
print(" Use of 'is' OPERATOR :" , a is b)
print(not False)
print((not False)== (False))'''

print("Boolean operations:")
name = "ashi"
age = 26
if name == "ashi" and age == 26:
   print("Your name is ASHI & you are 26 years old")

if name == "ashi" or name == "shobhi":
   print("Your name is either Ashi or SHOBHI")

print(" Use of 'in' operator")

if name in ["ashi", "Shobhi"]:
    print("Your name is either ashi or shobhi.")

if x==2:
    print("x is equal to two")

else:
    print("x not matches ")

IF ELSE

WAP to check length of a string and if len>9 ,print("L") ,if it is 9 to 5 print("M") else ("S")

x=int(input("Enter num"))
if x==0:
    print("x is null")
elif x>0:
    print("positive")
else:
    print("negative")

x=input("Enter user name")
if x.isdigit():
    print("String has digits")
elif x.isalpha():
    if x.isupper():
        print("Uppercase")
    elif x.islower():
        print("lowercase")
    else:
        print("Upper case & lowercase combination")
else:
    print("Mixed")

    

x=9
if x>5:
    print("Hello")
else:
    print ("BYE")

LOOPS

for x in range(21,10,-2):
    print(x)

for i in range(21,30,2):
    print(i)

for i in {1:6,10:15}:
    print(i)

for i in range(12,6,-2):
    print(i)

for i in range(30,100,2):
    print(i)

for i in range(9,1,-2):#(start,stop,difference)
    print(i)

a="python"
b=(1,2,"a")
c=[1.2,3,"x"]
d={"one":1,"two":2}
for i in d:
   print(i)

a=[1,2,"ashi"]
#print(len(a))
for i in a:
    print(a)
    

# iterating String using for loop:
a=[1,2,3,4,5]
for i in a: # loop will hold the range = len(a)
    print(a)

#input list

l=[]
number = int(input("how many value you want in a list: "))
for i in range(0,number):
   values = int(input("enter member:"))
   l.append(values)
 
print(l)

how many value you want in a list: 4
enter member:-3
enter member:444
enter member:56
enter member:87
[-3, 444, 56, 87]

##Create a dictionary for emp ID as key and jobrole as value.

#Code to generate & print dictonary
n=int(input("Enter no of students"))
d = {}
for x in range(1,n+1):
    i=int(input("Enter roll num"))
    name=input("Enter your name")
    d[i]=name #value is square of number
print(d) 
print("*"*20)

Enter no of students3
Enter roll num1
Enter your nameram
Enter roll num2
Enter your nameash
Enter roll num3
Enter your namesid
{1: 'ram', 2: 'ash', 3: 'sid'}
********************

• Ques: Validity of Password factors: one uppercase ,lowercase,digit and spl character,nospace.len(8-20) hint="@#%&*_>>"

pwd=input('enter passowrd')
d=a=u=s=l=sp=0
w="@#$%^&*_><?/"
for c in pwd:
    if c.isdigit():
        d=d+1
    elif c.isalpha():
        a=a+1
        if c.isupper():
           u=u+1
        elif c.islower():
           l=l+1    
    elif c in w:
        s=s+1
    elif c.isspace():
        sp=sp+1    
    else:
        pass
if d==0:
    print("invalid password no digits")
if sp>0:
    print("Invalid space not allowed")
elif a==0:
    print("INVALID ENTER SOME LETTERS")
elif u==0:
    print("INVALID ENTER one in uppercase")
elif l==0:
    print("INVALID ENTER one in lowercase")
elif s==0:
    print("INVALID enter special character")
elif len(pwd)<10:
    print("INVALID MINIMUM LENGTH SHOULD BE 9")
else:
    print("Valid pasword")

enter passowrda1B@
INVALID MINIMUM LENGTH SHOULD BE 9

list=[]
number = int(input("how many value you want in a list: "))
for i in range(0,number):
   element = int(input("enter your choice number:"))
   list.append(element)
 
print(list)

x=0 #

while x<4:
    print(x)
    x=x+1
print("end")

0
1
2
3
end

i=0 #initialization
while i<5:#condition via while loop
    x=input("Enter your name")
    i=i+1
print("end")

Ques: Count even & Odd from a list

numbers = [22,6,1,3,5,5,6,8,9,12,13,11,11,13,13] # Declaring the list
count_odd = 0
count_even = 0
for x in numbers:
        if not x % 2:
    	     count_even+=1
        else:
    	     count_odd+=1
print("Number of even numbers :",count_even)
print("Number of odd numbers :",count_odd)

#Code to generate & print dictonary
n=int(input("Input a number "))
d = {}
for x in range(1,n+1):
    d[x]=x*x #value is square of number
print(d) 
print("*"*20)

Functions

def demo(x,y):
     return(x)
demo(3,8)
demo(6,12.5)
demo("py","thon")

def Emp(name="",age=10):
    x=input("Enter your name")
    y=int(input("Enter your age"))
    #z=float(input("Enter your year of experience"))
    #return ;
Emp()
Emp()

def add(a,b):
        x=a+b
        print(x)
add(2,7)

def mul(x,y):
        prod=x*y
        print("The product inside=",prod)
        return x*y
print("The product outside=",mul(9,11),)

def data(name="",roll=00):
        print("%s \t rollno= %d"%(name,roll))
data("ASHI",2)
data("RAM",5)

n=int(input("Enter number"))
for i in range (1,11):
   print(n,'x',i,'=',n*i)
 

#Map two list into dictionaries
keys = ['red', 'green', 'blue']
values = [0,1,2]
d1 = dict(zip(keys, values))
print(d1)
print("*"*20)

import operator
d = {1: 1, 2: 4, 5: 25, 4: 16}
sorted_d = sorted(d.items(), key=operator.itemgetter(0))
print('Dictionary in ascending order by value : ',sorted_d)
sorted_d = sorted(d.items(), key=operator.itemgetter(0),reverse=True)
print('Dictionary in descending order by value : ',sorted_d)
print("*"*20)
#add a key to a dictionary.
d = {0:10, 1:20,3:30}
d.update({2:40})
print(d)
print("*"*20)

for d in (dic1, dic2, dic3): dic4.update(d)
print(dic4)
print("*"*20)
#Sum all values in a dict
my_d = {'d1':100,'d2':-4,'d3':12}
print( "sum=",sum(my_d.values()))
print("*"*20)
#iterate dictinary over loop
d = {'name' : 00, 'ash': 1, 'ashi': 2, 'sid': 3} 
for dict_key, dict_value in d.items():
    print(dict_key,':',dict_value)
print("*"*20)    
#Map two list into dictionaries
keys = ['red', 'green', 'blue']
values = [0,1,2]
d1 = dict(zip(keys, values))
print(d1)
print("*"*20)

keys = ['red', 'green', 'blue']
values = [0,1,2]
d1 = dict(zip(keys, values))
print(d1)
print("*"*20)