methodfinder

Python tool to find a method that you know must exist.

Sometimes you know the inputs and outputs for a procedure, but you don't remember the name. methodfinder.find tries to find the name.

>>> import methodfinder
>>> methodfinder.find([]) == 0
len([])
sum([])
>>> 'a' + 5
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  TypeError: can only concatenate str (not "int") to str
>>> methodfinder.find('a') == 97 # 'a' is 97 in ASCII
ord('a')
>>> methodfinder.find(97) == 'a'
chr(97)
>>> def ascii_add(letter, offset):
...     return chr(ord(letter) + offset)
...
>>> ascii_add('a', 5)
'f'
>>> methodfinder.find([]) == False
any([])
bool([])
callable([])
>>> methodfinder.find(3) == "3"
ascii(3)
format(3)
repr(3)
str(3)
>>> methodfinder.find([1,2,6,7], 6) == True
6 in [1, 2, 6, 7]
# to use the "in" syntax with your own type, override __contains__
>>> methodfinder.find(" ",["foo", "bar"]) == "foo bar"
' '.join(['foo', 'bar'])
>>> methodfinder.find([1,2,3]) == 6
sum([1, 2, 3])
>>> methodfinder.find([1,2,3]) == 7
>>> methodfinder.find('1 + 1') == 2
eval('1 + 1')
>>> methodfinder.find(0) == 1
0.denominator
math.factorial(0)
>>> methodfinder.find(0.0) == 1.0
math.cos(0.0)
math.cosh(0.0)
math.erfc(0.0)
math.exp(0.0)
>>> import numpy as np
>>> methodfinder.find(np, 3) == np.array([[1.0, 0.0, 0.0], [0.0, 1.0, 0.0], [0.0, 0.0, 1.0]])
numpy.eye(3)
numpy.identity(3)
>>> methodfinder.find([1,2]) == [[1,2],[2,1]]
itertools.permutations([1, 2])
>>> methodfinder.find([1,2], [3,4]) == [[1,3],[2,4]]
itertools.zip_longest([1, 2], [3, 4])
zip([1, 2], [3, 4])
>>> methodfinder.find([1,2], lambda x, y: x + y) == 3
functools.reduce(<function <lambda> at 0x7f3ac6cc8dd0>, [1, 2])
>>> methodfinder.find(-1,3) == 2
-1%3
-1+3
3+-1
>>> methodfinder.find(3,2) == 1.5
3/2
>>> methodfinder.find(-1) == 1
-(-1)
-1.bit_length()
-1.denominator
abs(-1)
>>> methodfinder.find(1,2) == 3
1+2
1^2
1|2
2+1
2^1
2|1
>>> methodfinder.find(1,1) == 1
1&1
1**1
1*1
1.__class__(1)
1.denominator
1.numerator
1.real
1//1
1|1
math.gcd(1, 1)
max(1, 1)
min(1, 1)
pow(1, 1)
round(1, 1)
>>> methodfinder.find([1,2], '__iter__') == True
hasattr([1, 2], '__iter__')