Flattening a dictionary into a string

Given:

k = {'MASTER_HOST': '10.178.226.196', 'MASTER_PORT': 9999}

I want to flatten into the string:

"MASTER_HOST='10.178.226.196', MASTER_PORT=9999"

This is the ugly way that I'm achieving this right now:

result = []
for i,j in k.iteritems():
    if isinstance(j, int):
        result.append('%s=%d' % (i,j))
    else:
        result.append("%s='%s'" % (i,j))

', '.join(result)

I'm sure my developer colleagues are going to chastize me for this code. Surely there is a better way.

For python 3.0+ (as @Serdalis suggested)

', '.join("{!s}={!r}".format(key,val) for (key,val) in k.items())

Older versions:

', '.join("%s=%r" % (key,val) for (key,val) in k.iteritems())

StackExchange Code Review Q#7953, answer score: 33