Comparison of Lambda and def usages in Python

The use of Lambda and def in Python is compared with the examples in this paper. Share to everyone for your reference. The specific analysis is as follows:

1. Lambda is used to create anonymous functions, unlike DEF (the functions created by def have names).

2. A lambda does not assign the result to an identifier, and DEF assigns the result of the function to an identifier.

3. Lambda is an expression, and DEF is a statement

Sample programs:

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>>> f1 = Lambda X,y,z:x*2+y+z # lambda with multiple parameters >>> print F1 (3,2,1) 9 >>> f3 = Lambda i:i*2 # Lam BDA comes with a parameter >>> print F3 (7) >>> def fun1 (n): ... return lambda M:m**n # m n-th ... >>> def fun2 (M, N): ... return m+n ... >>> f2 = fun1 (2) # Dynamically generating a function >>> print F2 (4) >>> print fun2 (3, LA MBDA x:x+1) (2)) # Lambda as function parameter 6 >>>

I hope this article will help you with your Python programming.