CODEWITHSUNDEEP
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Marius Illmann
Marius Illmann

Reputation: 352

Is there a way in Python to write lambda like objects, like in JS

In JS I can define an Object like this:

foo = {"foo": 42, "bar": function(){/* do something */}}

Is there a way to do the same thing in Python ?

Upvotes: 4

Views: 298

Answers (2)

Jeril
Jeril

Reputation: 8541

Python has lambda function. A lambda function is a small anonymous function. A lambda function can take any number of arguments, but can only have one expression.

Syntax:

lambda arguments : expression

Can you try the following:

foo = {"foo": 42, "bar": lambda a : a + 10}

And you can use it in the following way:

foo['bar'](5)

You will get the following output:

15

Entire example:

>>> foo = {"foo": 42, "bar": lambda a : a + 10}
>>> foo['bar'](5)
15

You can also call a standard function the same way refer the other solution by Loss of human identity.

Example

def my_func(a):
    return a + 10
foo = {"foo": 42, "bar": my_func}
foo['bar'](5)
# output
# 15

Upvotes: 5

Employee
Employee

Reputation: 3233

The following might work:

# Define a function    
def foo():
    print("foo")

# Define a dictionary    
d = {"a":1, "b":foo}

d["b"]()

Output: foo

Upvotes: 6

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