function

Example Python program function.py Python version 3.x or newer. To check the Python version use:

python --version

Methods

• def my_function():
• def my_func ():
• def my_func(country = "India"):
• def func_one(vegetables = "potato"):
• def my_func(x):
• def myfunc(n):
• def absolute_number(num):
• def avg_num(x,y):
• def multiple_value(x,y,z):
• def square_sum(x,y):
• def printme( str ):
• def changeme(mylist):

Code

Python example

c:\any\dir> spyder --reset
#%reset -f
#%%
#091 Functions in Python
#Creation
def my_function():
    print("Hello")
#created a new function,how to call the function?
my_function()
#Write a function and return the value of variable of the function
def my_func ():
    x = 10
    print("value inside the function :", x)
y = 20
my_func()
print("value is outside the function :", y)    
#how to pass default value to the function
def my_func(country = "India"):
    print("I am from " + country)
my_func("India")
#
def func_one(vegetables = "potato"):
    print("i am fond of" + vegetables)
func_one( "Carrot")
#how to write a function that Returns Values
def my_func(x):
    return 5 * x
print(my_func(3))
#lambda functions
#create a function that gives square,cubes etc of integers
myfunc = lambda i : i**2
print(myfunc(3))
#
myfunc = lambda i : i**4
print(myfunc(5))
#
myfunc = lambda i : i**3
print(myfunc(6))
#
myfunc = lambda i: i**5
print(myfunc(2))
#create a function that multiplies two integers
myfunc = lambda x,y : x*y
print(myfunc(5,6))
#create a function which creates an anonymous function #that multiplies 
#variable i with variable n.
def myfunc(n):
    return lambda i : i*n
double = myfunc(2)
triple = myfunc(3)
val = 11
print ("Double: " + str(double(val)) + "Triple: " + str(triple(val)))
# Write a function that returns the absolute number
def absolute_number(num):
    if num >= 0:
        return num
    else:
        return -num
print(absolute_number(4))
print(absolute_number(-4))
#Write a function that gives the average of two numbers.
#always the return need to be outside the function.
def avg_num(x,y):
    print("Average of ",x, "and", y,"is ",(x+y)/2)
avg_num(3,4)
#Write a function that returns the multple of three numbers
def multiple_value(x,y,z):
    print("The expected value of", x,y,z,"is", x*y*z)
multiple_value(7,8,9)
#Write a function that returns the square of sum of two values.
def square_sum(x,y):
    return(x*x+2*x*y+y*y)
    print("The square of sum of 2 and 3 is :", square_sum(2,3))
square_sum(8,9)
#
def printme( str ):
   "This prints a passed string into this function"
   print(str)
   return;
printme("Outside is cloudy")
#
def changeme(mylist):
    "This change is passed to the function"
    mylist.append([1,2,3,4,5,6])
    print("Values inside the function: ", mylist)
    return

Useful Links

• Articles: https://python-commandments.org/
• Python shell: https://bsdnerds.org/learn-python/
• Tutorial: https://pythonprogramminglanguage.com/