def _make_nested_list(self, gen):
"""Makes nested list from generator for creating numpy.array"""
res = []
for ele in gen:
if ele is None:
res.append(None)
elif not is_string_like(ele) and is_generator_like(ele):
# Nested generator
res.append(self._make_nested_list(ele))
else:
res.append(ele)
return res
def _eval_cell(self, key):
"""Evaluates one cell"""
# Set up environment for evaluation
env = globals().copy()
env.update( {'X':key[0], 'Y':key[1], 'Z':key[2],
'R':key[0], 'C':key[1], 'T':key[2],
'S':self } )
code = self(key)
# If cell is not present return None
if code is None:
return
elif is_generator_like(code):
# We have a generator object
return numpy.array(self._make_nested_list(code), dtype="O")
# If only 1 term in front of the "=" --> global
split_exp = code.split("=")
if self._has_assignment(split_exp):
glob_var = split_exp[0].strip()
expression = "=".join(split_exp[1:])
else:
glob_var = None
expression = code
try:
result = eval(expression, env, {})
except AttributeError, err:
# Attribute Error includes RunTimeError
result = err
