[ANN] istring 1.0.1 released; announce list created

[Kirill Simonov]

* Steven D. Arnold <stevena at neosynapse.net>:
> 2. Some have asked why one would not use vars() and the mapping format
> all the time, since vars returns a dictionary of the local namespace?
> The problem with vars() is that (at least as far as I know) it doesn't
> support dictionaries, lists, object attributes and function calls.


### xstring.py ###

import sys

class XDict:
    def __init__(self, globals, locals):
        self.globals = globals
        self.locals = locals
    def __getitem__(self, key):
        return eval(key, self.globals, self.locals)

def xstring(string):
    frame = sys._getframe(1)
    return string % XDict(frame.f_globals, frame.f_locals)

def test():
    import math
    x = y = 2
    s1 = "%(x)s + %(y)s = %(x+y)s"
    s2 = "sin(pi/4) = %(math.sin(math.pi/4))0.4f"
    s3 = "Python-%(sys.version[:3])s"
    for s in [s1, s2, s3]:
        print "xstring(%r) == %r" % (s, xstring(s))

if __name__ == '__main__':
    test()

### EOF ###


-- 
xi