Mar 8, 2011 · lambda is an anonymous function, usually used for something quick that needs computing. Example (This is used in a LexYacc command parser): assign_command = …

May 31, 2013 · p = lambda x: (lambda x: x%2)(x)/2 Note in Python 2 this example will always return 0 since the remainder from dividing by 2 will be either 0 or 1 and integer-dividing that …

Jun 2, 2017 · There is a code example in the O Reilly Programming Python book which uses an OR operator in a lambda function. The text states that "[the code] uses an or operator to force …

Jan 26, 2009 · or alternately, for earlier versions of python: fact = lambda x: x == 0 and 1 or x * fact(x-1) Update: using the ideas from the other answers, I was able to wedge the factorial …

Dec 11, 2008 · Since type is the default class of a python class object, and calling a class creates a new instance of that class, calling type with the correct arguments will result in a new class. …

Feb 6, 2009 · In such a case, lambda expressions aren't usually the best thing. As Jon Skeet mentioned, you're gonna end with multiple if-else expressions: lambda x1, x2: -1 if x1 < x2 …

May 5, 2012 · (Python's behavior here is not unusual in the functional programming world, for what it's worth.) There are two solutions: Use a default argument, binding the current value of …

In Python 2.6, I want to do: f = lambda x: if x==2 print x else raise Exception() f(2) #should print "2" f(3) #should throw an exception This clearly isn't the syntax. Is it possible to perform an if in …

May 4, 2014 · I want to print Fibonacci Series using lambda() function with map() or reduce() function in Python. Note: I did search on SO, but could only find questions related to Printing …

Generators and list comprehensions are more pythonic than chainable functions. >>> lst = [i for i in range(1, 6)] >>> lst [1, 2, 3, 4, 5] >>> gen = (x for x in lst if ...