Comprehensive parsing of lambda expressions in Python _python

What is a lambda expression

Lambda expression (lambda expression) is an anonymous function that is based on the lambda calculus in mathematics, directly corresponding to the lambda abstraction (lambda abstraction), an anonymous function, A function that has no function name. Lambda expressions can represent closures (attention differs from the traditional meaning of mathematics).

A lambda is an anonymous function that can be substituted using a lambda expression when we need to call a function repeatedly and do not want to write so much code.

Common format for Lambda:

Lambda argument:manipulate (argument)

Sample code:

Add = Lambda x,y:x + y
Print Add (3,5)
#output: 8

Usage:

Sort.

A = [(1, 2), (4, 1), (9, ten), (+-3)]
A.sort (key=lambda x:x[1])
print (a)
# Output: [(13,-3), (4, 1), 1 ), (9, 10)]

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