安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- What exactly is lambda in Python? - Stack Overflow
Also lambda can be used in an expression directly, while def is a statement def f(x, y): return x + y Would give you almost the same result as f = lambda x, y: x + y And you can use it directly in an expression g(5, 6, helper=lambda x, y: x + y) which with def would be less concise
- python - List comprehension vs. lambda + filter - Stack Overflow
by_attribute = lambda x: x attribute == value xs = filter(by_attribute , xs) Yes, that's two lines of code instead of one, but you clean filter expression from cumbersome lambda and by naming lambda nicely it literally becomes being read as "filter by attribute" :)
- Is there a way to perform if in pythons lambda? [duplicate]
@Glenn Maynard: There's almost no reason to use a lambda, period Assigning a lambda to a variable -- as a stand-in for def-- is generally a Very Bad Idea (tm) Just use a def so mere mortal programmers can read, interpret, understand and maintain it –
- Aggregating in pandas groupby using lambda functions
Here is runnable example: import numpy as np import pandas as pd N = 100 data = pd DataFrame({ 'type': np random randint(10, size=N), 'status': np random randint(10
|
|
|