पायथन फंक्शंस का परिचय

• आंशिक
• पूर्ण आदेश;
• update_wrapperके लिए आंशिक ।

पायथन में आंशिक रूप से सुविधा

आंशिक फ़ंक्शन कैसे बनाएं ?

partial(func, /, *args, ** kwargs)

def multiply(x, y):
 
    return x * y

def multiply(x, y):
        return x * y
 
def doubleNum(x):
       return multiply(x, 2)
 
def tripleNum(x):
       return multiply(x, 3)

from functools import partial
 
def multiply(x, y):
       return x * y
 
doubleNum = partial(multiply, 2)
   tripleNum = partial(multiply, 3)
 
Print(doubleNum(10))
 
Output: 20

from functools import partial
def orderFunc(a,b,c,d):
      return a*4 + b*3 + c*2 + d
 
result = partial(orderFunc,5,6,7)
print(result(8))
 
Output: 60

पूर्ण आदेश

from functools import partial
def orderFunc(a,b,c,d):
       return a*4 + b*3 + c*2 + d
 
 result = partial(orderFunc,c=5,d=6)
print(result(8,4))
 
Output: 60

from functools import partial
 
def add(x,y):
      return x + y
 
add_partials = []
for i in range (1, 10):
      function = partial(add, i)
      add_partials.append(function)
      print('Sum of {} and 2 is {}'.format(i,add_partials[i-1](2)))
 
  
Output:
 
Sum of 1 and 2 is 3
Sum of 2 and 2 is 4
Sum of 3 and 2 is 5
Sum of 4 and 2 is 6
Sum of 5 and 2 is 7
Sum of 6 and 2 is 8
Sum of 7 and 2 is 9
Sum of 8 and 2 is 10
Sum of 9 and 2 is 11

मेटाडाटा

from functools import partial
 
def add(x,y):
      return x + y
 
# create a new function that multiplies by 2
result = partial(add,y=5)
print(result.func)
print(result.keywords)
 
Output:
<function add at 0x7f27b1aab620>
{'y': 5}

def multiply(x, y):
 
    """Test string."""
 
    return x * y
 
 result = functools.partial(multiply, y=2)
 
 try:
 
    print ('Function Name:'+result.__name__)
 
except AttributeError:
 
    print('Function Name: __no name__')
 
 print ('Function Doc:'+result.__doc__)
 
 print('Updating wrapper:')
 
functools.update_wrapper(result, multiply)
 
 print ('Function Name:'+result.__name__)
 
print ('Function Doc:'+result.__doc__)
 
Output:
 
Function Name: __no name__
 
Function Doc:partial(func, *args, **keywords) - new function with partial application
 
    of the given arguments and keywords.
 
 
Updating wrapper:
 
Function Name: multiply
Function Doc: Test string.

निष्कर्ष