The difference between Groovy and Python "translation"

Content of this article

• General
• Lists List
• Maps maps
• Ranges/slices Range/Fragment
• Object Access Object
• Resources

Groovy is a JVM-based Agile development language that combines many of the powerful features of Python, Ruby, and Smalltalk, and groovy code can be well combined with Java code and can be used to extend existing code. Because of its features running on the JVM, Groovy can use libraries written in other Java languages.

General

Python	Groovy
REPR (x)	X.inspect (), X.dump ()
x.y if x else None	X?. Y
"% (foo) s"% locals ()	"${foo}"

Lists List

Python	Groovy
Not X	!x X.empty
Len (x)	X.size ()
For item, IDX in enumerate (x): ...	X.eachwithindex {Item, IDX--...}

Maps maps

Python	Groovy
{}	[:]//An empty map
Depends: D if used like:for K in D: List (d) if list needed D[iter].keys () explicitly	D.keyset ()
D.[iter]values ()	D.values ()
[K+1 for K in d]	D.collect {k, V-k+1}
D = dict (Zip (k, v))	K = 1..3 v = ' a ' ... ' C D = [:]; K.eachwithindex {It, I, d[it] = v[i]} println d//[1: "A", 2: "B", 3: "C"]

Ranges/slices Range/Fragment

Python	Groovy
Range (3)	0..<3
Range (1, 3+1)	1..3
Range (0, 10, 2)	Not represented as a data type if you can use 0.step (10, 2) {...}
"ABCdef" [3:]	"ABCdef" [3..-1]

Object Access Object

Python	Groovy
m = ' strip '; GetAttr ('! ', m) ()	m = ' trim '; ‘ ! ‘." $m "()
args = (' A ', 2); ' Abcabc '. Find (*args)	args = [' A ', 2]; ' Abcabc '. IndexOf (*args)

Resources

• Groovy Differences from Python

The difference between Groovy and Python "translation"