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Project Description

MacroPy is an implementation of Macros in the Python Programming Language. MacroPy provides a mechanism for user-defined functions (macros) to perform transformations on the abstract syntax tree(AST) of Python code at module import time. This is an easy way to modify the semantics of a python program

Python like you’ve never seen before

MacroPy allows you to create constructs which are impossible to have in normal python code, such as:

Tracing

with trace:
    sum([x + 5 for x in range(3)])

# sum([x + 5 for x in range(3)])
# range(3) -> [0, 1, 2]
# x + 5 -> 5
# x + 5 -> 6
# x + 5 -> 7
# [x + 5 for x in range(3)] -> [5, 6, 7]
# sum([x + 5 for x in range(3)]) -> 18

Quick Lambdas

print map(f[_[0]], ['omg', 'wtf', 'bbq'])
# ['o', 'w', 'b']

print reduce(f[_ + _], ['omg', 'wtf', 'bbq'])
# 'omgwtfbbq

Case Classes

@case
class Point(x, y): pass

p = Point(1, 2)

print str(p)    #Point(1, 2)
print p.x       #1
print p.y       #2
print Point(1, 2) == Point(1, 2) # True

And more! All this runs perfectly on vanilla Python 2.7 or PyPy 2.0. For more details, see the GitHub page. or ask in the Google Group.

Release History

Release History

1.0.3

This version

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1.0.2

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1.0.1.1

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1.0.1

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1.0.0

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0.2.0

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0.1.8

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0.1.7

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0.1.6

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0.1.5

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0.1.4

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0.1.3

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0.1.2

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0.1.1

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0.1

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
MacroPy-1.0.3.zip (36.8 kB) Copy SHA256 Checksum SHA256 Source Jul 9, 2013

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