dpath search not converting unknown datatypes to strings #147
Description
Given: dpath 2.0.1 on python 3.6.8
Example dictionary:
testdict = {'from': datetime.date(2018, 4, 15)}
dpath.util.search(testdict,"**/from*") returns:
Traceback (most recent call last):
File "/home/test/lib64/python3.6/site-packages/dpath/segments.py", line 14, in kvs
return iter(node.items())
AttributeError: 'datetime.date' object has no attribute 'items'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/test/lib64/python3.6/site-packages/dpath/util.py", line 232, in search
return dpath.segments.fold(obj, f, {})
File "/home/test/lib64/python3.6/site-packages/dpath/segments.py", line 349, in fold
for pair in walk(obj):
File "/home/test/lib64/python3.6/site-packages/dpath/segments.py", line 62, in walk
for found in walk(v, location + (k,)):
File "/home/test/lib64/python3.6/site-packages/dpath/segments.py", line 48, in walk
for k, v in kvs(obj):
File "/home/test/lib64/python3.6/site-packages/dpath/segments.py", line 16, in kvs
return zip(range(len(node)), node)
TypeError: object of type 'datetime.date' has no len()
I'd suggest adding an option to be sure every value is parsed as a certain type. For example, json.dumps has the same issue. If I was using it I'd add a default option to interpret unknown things as strings as in:
Fails:
json.dumps(testdict,indent=1, sort_keys=True) gives me a similar object error
Works:
json.dumps(testdict,indent=1, sort_keys=True, default=str) then works since it forces unknown types to be altered to a string
I'd suggest a fix that would include an option like json.dumps:
Example:
dpath.util.search(testdict,"**/from*",default=str)
Would return:
{'from': 'datetime.date(2018, 4, 15)'}