Suppose we have python list with duplicates content we need to remove duplicates from list we can use dict.fromkeys
mylist = [1, 2, 2, 3, 4] mylist = list(dict.fromkeys(mylist)) print(mylist)
Category: python
how to define a function in python
As per the latest trends set python is the most exploring programming language,expert says in the middle of 21st century 70% of the day life application will be depend on python programming language, python and artificial intelligence definitely will brings miracle in the middle of 21st century.So being a programmer without python programming language you cant survive in 21st century.Like other programming language function in python is also so important.so basically our question is how to define a function in python.To define a function in python programming language, python has its on syntax. lets see the syntax
def FUNCTION-NAME( PARAMETER):
FUNCTION_BLOCK
return [EXPRESSION]
def => Function blocks begin with this keyword def
FUNCTION-NAME => Name of the function you can define your own name
PARAMETER => It the Parameter passing to the function when function was called
FUNCTION_BLOCK => Function code block
EXPRESSION => return [EXPRESSION] passing back an expression to the caller
See example
def sum(a,b): resultvalue = a+b return resultvalue x =10 y = 40 print(sum(x,y)); x =60 y = 40 print(sum(x,y));
def printPrime(lower,upper):
print( "prime numbers between "+str(lower)+ ", "+str(upper))
for num in range(lower,upper + 1):
if num > 1:
for i in range(2,num):
if (num % i) == 0:
break
else:
print(num)
x =10
y = 20
printPrime(x,y);
x =1180
y = 1200
printPrime(x,y);
python print function syntax
Most of the beginners in python always confuse with print function and start searching for print function in google.Like other programming language python print out put function also easy. In this tutorial we are going to explore python print ,the way to print the out put in python. print() is the function used in python to print out put.
Let see example
python print syntax
print(object(s), separator=separator, end=end, file=file, flush=flush)
object = any object, it will convert in to string and print
sep=’separator’ = Optional default ‘ ‘
end=’end’ = Default is line feed, will tell what print at the end
file = Default is sys.stdout , object with a write method.
1) python print a string “Hello World”
print("Hello World")
Output:
Hello World
2) python print a variable numberstart =10
numberstart =10 print(numberstart) Output: 10
3) python print : managing tuble
tupleA = (2, 4, 8, 12)
tupleB = ('red', 'blue')
print(tupleA + tupleB )
Output:
(2, 4, 8, 12, 'red', 'blue')
How to get input from user in python
To get input from user in python we have input build in function
x= input(“Enter a number : “)
x= input(“Enter your name : “)
To get number value from input python
x= int(input(“Enter a number : “))