Python3 Programming Examples

Lists

python3

a_list = ['a', 'b', 'c', 'd', 'e']
print("a_list =",a_list)

a_list[0]
print("a_list[0] =",a_list[0])

a_list[-1]
print("a_list[-1] =",a_list[-1])

a_list[1:3]  
print("a_list[1:3] =",a_list[1:3])

a_list = a_list + ['f', 'g']
print("a_list =",a_list)

has_c = 'c' in a_list
print("has_c =",has_c)

dddddd

python3

# Hello World program in Python
    
print ("laalamm")

print ("llama")

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python3

# Hello World program in Python
    
print ("laalamm");

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python3

# Hello World program in Python
sum1=0
k=input()
l=k.split()
a=[]
if(k[0].isalpha()):
    
    sum1+=1
    i=1
    while(i<len(k)):
        if(i==len(k)):
            sum1+=(int(a[0])+int(a[1]))*int(a[2])+int(a[2])
    
        if(k[i].isalpha()):
            ##print(sum1)
            sum1+=(int(a[0])+int(a[1]))*int(a[2])+int(a[2])+i+1
            print(sum1)
            a=[]
        else:
           a.append(k[i])
           print(a)
        i+=1
    else:
         
        sum1+=(int(a[0])+int(a[1]))*int(a[2])+int(a[2])
print(sum1)


for i in range(len(k)):
    
    if(k[i].isalpha()):
            ##print(sum1)
        sum1+=(int(a[0])+int(a[1]))*int(a[2])+int(a[2])+i+1
        a=[]
    else:
        a.append(k[i])
        ## print(a)
print(sum1)

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python3

import math
a=2
b=7
c=-4
d=(b**2) - (4*a*c)
sol1=(-b-math.sqrt(d))/(2*a)
sol2=(-b+math.sqrt(d))/(2*a)
print('The Solution are {0} and {1}'.format(sol1,sol2))

CheckSum

python3

# Hello World program in Python

def CalculateCheckSum(hexList):
    if len(hexList) < 4:
        print ("Error.")
        return -1
    size = hexList[1] - 1
    total = 0
    while size > 0:
        total += size * hexList[size - 1]
        size -= 1
    return total & 0x00FF
    
hexStr = input("HEX: ")
print('0x{:02X}'.format(CalculateCheckSum([int(j, 16) for j in hexStr.split(' ')])))

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python3

# Hello World program in Python
    
print ("Hello World!");
print ("Hello World!");print ("Hello World!");

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python3

# Hello World program in Python
name = input("what is your name\n")
print("Hello,", name)

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python3

class Listnode:
    def __init__(self,key=None):
        self.value=key
        self.next=None
class Hashtable:
    def __init__(self):
        self.t=[None for i in range(30)]
    def hash(self,s):
        s=list(s)
        n=len(s)
        sum=0
        for i in range(n):
            a=ord(s[i])
            sum=sum+a
        c=sum%30
        return c
    def insert(self,s):
        c=self.hash(s)
        if self.t[c]==None:
            self.t[c]=Listnode(s)
        else:
            temp=Listnode(s)
            temp.next=self.t[c]
            self.t[c]=temp
    def search(self,s):
        c=self.hash(s)
        if self.t[c]==None:
            return False
        else:
            temp=self.t[c]
            while temp!=None and temp.value!=s:
                temp=temp.next
            if temp==None:
                return False
            return True
    def printlist(self):
        for i in range(30):
            if self.t[i]==None:
                print("None")
            else:
                temp=self.t[i]
                while temp!=None:
                    print(temp.value)
                    temp=temp.next
                
def main():
    l=Hashtable()
    print("enter the words")
    s=[]
    for i in range(4):
        s[i]=input("")
    for i in range(len(s)):
        l.insert(s[i])
    l.printlist()
    l.search("cat")
        
if __name__=='__main__':
    main()

fibonacci.py

python3

#Fibonacci series
    
def fibonacci( number ) :
    sum_n2 = 1; #F(1)
    sum_n1 = 1; #F(2)
    for i in range( number ) :
        sum_n = sum_n1 + sum_n2
        sum_n1 = sum_n
        sum_n2 = sum_n1
    return sum_n

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