I would like to create a "metadata" file for several Python objects I have built and was wondering if there was an elegant way to write a subset of these attributes to a .txt file. Ideally, the .txt file would have the following formatting:
object.Name = thisistheobjectname object.Value = thisistheobjectvalue etc...
If your goal is to reuse this object later on, then don't reinvent the wheel and use pickle.
But if your goal is to just get objects variables in a nice looking txt file then you can leverage __dict__ of the object
You can ether store it in JSON or convert it to what ever works for you:
For example:
import json
class Foo(object):
def __init__(self, name, value):
self.name = name
self.value = value
myfoo = Foo('abc', 'xyz')
with open('foo.txt', 'w') as f:
f.write(' '.join(["myfoo.%s = %s" % (k,v) for k,v in myfoo.__dict__.iteritems()]))
Will result in something like:
myfoo.name = abc myfoo.value = xyz
If you are looking for something simple, you can use this for your example above.
import sys
class Foo(object):
bar = 'hello'
baz = 'world'
f = Foo()
print "\n".join(("`%s.Name=%s %s.Value=%s`" % (f.__class__.__name__, name, f.__class__.__name__, getattr(f, name)) for name in dir(f) if not name.startswith("__")))
will give
`Foo.Name=bar Foo.Value=hello` `Foo.Name=baz Foo.Value=world`
For more complex serialization you are better off using pickle
Use Pickle library for object serialization.
