Python 3.8.10 (default, Sep 28 2021, 16:10:42)

[GCC 9.3.0] on linux

Type "help", "copyright", "credits" or "license()" for more information.

>>> x = lambda(i: i * 2 + 3)

SyntaxError: invalid syntax

>>> x = lambda i: i * 2 + 3

>>> x(4)

11

>>> import math

>>> y = lambda i: math.sqrt(math.exp(i))

>>> y(4)

7.38905609893065

>>> x = lambda _: print('Ola mundo!')

>>> x()

Traceback (most recent call last):

File "/usr/lib/python3.8/idlelib/run.py", line 559, in runcode

exec(code, self.locals)

File "<pyshell#7>", line 1, in <module>

TypeError: <lambda>() missing 1 required positional argument: '_'

>>> x = lambda: print('Olá mundo!')

>>> x()

Olá mundo!

>>> type(x)

<class 'function'>

>>> x = lambda nome, idade: print(f"nome = {nome}\n idade = {idade}.")

>>> x('Danilo', 24)

nome = Danilo

idade = 24.

>>> x = lambda nome, idade: print(f"nome = {nome}\nidade = {idade}.")

>>> x('Caio', 20)

nome = Caio

idade = 20.

>>> x = lambda nome, idade: print(f"nome = {nome}\nidade = {idade}")

>>> x('Caio', 20)

nome = Caio

idade = 20

>>> x = lambda *args: print(args)

>>> x('caio', 'marcos', 'joao')

('caio', 'marcos', 'joao')

>>> x('caio')

('caio',)

>>> x()

()

>>> def f():

return 'caio', 'marcos'

>>> x(f)

(<function f at 0x7f941b161e50>,)

>>> x(f())

(('caio', 'marcos'),)

>>> x(*f)

Traceback (most recent call last):

File "/usr/lib/python3.8/idlelib/run.py", line 559, in runcode

exec(code, self.locals)

File "<pyshell#26>", line 1, in <module>

TypeError: <lambda>() argument after * must be an iterable, not function

>>> def teste():

return lambda *args: print(args)

>>> x = teste()

>>> print(x)

<function teste.<locals>.<lambda> at 0x7f941a0d8160>

>>> x('caio', 'marcos')

('caio', 'marcos')

>>>