Can someone please explain these lines of Python program for me:
b =input("What number would you like to convert into Binary? ")
convert = lambda d: bin(int(d)) [2:]
print(b + " is " + convert(b) + " in Binary")
And also these lines of code:
b = input("What Binary number would you like to convert into Decimal? ")
convert= lambda b: str(int(b, 2))
print(b + " is " + convert(b) + " in Decimal")
The lambda expression is a way of defining a short function, e.g.
f = lambda x: x**2 # e.g. f(2) == 4
is equivalent to
def f(x):
return x**2
int(d) converts d into an integer. bin(...) takes that integer and converts it into a binary string, which looks like:
bin(int(3)) == '0b11'
Note that the first two characters, 0b, are not really part of the number, so we use slice notation [2:] to return everything from index 2 onwards:
'0b11'[2:] == '11'
Finally, the optional second argument to int sets the base that should be used for converting the argument; in this case, base 2 (binary):
int('11', 2) == 3
You can use this for other bases, too, e.g. 16 (hexadecimal):
int('11', 16) == 17
decimal to binary conversion if n=5
bin=lambda x : format(x,'b')
print(bin(n))
First statement will make bin a function which will take a argument and convert it into binary, format is used to convert int to binary and lambda to fetch the binary digits.
This will help you to print binary number
lambdaexpression?