Back to SDS/2 Parametric Scripts

class DataDict:

"""This class initializes a dictionary for data storage (Python 2.4)"""

def __init__(self, n, *section):

self.block = {}

for s in section:

self.block[s] = dict(['v'+str(i), 0] for i in range(n))

def __iter__(self):

yield self.block.keys()

def __str__(self):

return '\n'.join(['%s = %s' % (key, self.block[key]) for key in self.block])

def dd(self, sect):

# dd.items() returns a list, dd.iteritems() returns an iterator

return [i for i in self.block[sect].iteritems()]

if __name__ == '__main__':

D = DataDict(3, 'Qsection', 'Psection', 'Zsection')

print D.dd('Qsection')

print D.dd('Psection')

'''

>>>

[('v0', 0), ('v1', 0), ('v2', 0)]

[('v0', 0), ('v1', 0), ('v2', 0)]

>>> print D

Qsection = {'v0': 0, 'v1': 0, 'v2': 0}

Zsection = {'v0': 0, 'v1': 0, 'v2': 0}

Psection = {'v0': 0, 'v1': 0, 'v2': 0}

>>> print [x for x in D.block]

['Qsection', 'Zsection', 'Psection']

>>> print [x for x in D.block.iteritems()]

[('Qsection', {'v0': 0, 'v1': 0, 'v2': 0}), ('Zsection', {'v0': 0, 'v1': 0, 'v2': 0}), ('Psection', {'v0': 0, 'v1': 0, 'v2': 0})]

>>> for x in D.block:

print '%s = %s' % (x, D.block[x])

Qsection = {'v0': 0, 'v1': 0, 'v2': 0}

Zsection = {'v0': 0, 'v1': 0, 'v2': 0}

Psection = {'v0': 0, 'v1': 0, 'v2': 0}

>>>

'''

'''

# Update the local namespace

>>> for i in range(25):

... exec "%s = %d" % ('var'+str(i), 0) in None

# Update the global namespace

>>> dd = {}

>>> for i in range(25):

... dd['var'+str(i)] = 0

>>> globals.update(dd)

# Update the local namespace with dictionary dd

>>> for key in dd:

... exec "%s = %s" % (key, repr(dd[key])) in None

...

>>>

# Update a module namespace with dd

>>> import P3D

>>> P3D.__dict__.update(dd)

>>> var0

0

>>> var1

0

>>> var24

0

>>>

'''