I have two classes, using python 2.7 :
class Script(object):
name = ""
version = 0
dependency = []
class Dependency(object):
name = ""
version = 0
Ending up in a list listOfScripts like this :
listOfScripts = [20, 3, [39, 2, 30, 4], 21, 4, [65, 9, 12, 5]]
How can I dump this list as json ? I want the final output to be :
[{ "name":...
"version":...
"dependency": [{"name": .., "version":..}, {"name": .., "version":..}]
}]
This will work for you:
import json
class Script(object):
def __init__(self, name, version, dependency_list):
self.name = name
self.version = version
self.dependency_list = self.parse_dependencies(dependency_list)
def parse_dependencies(self, dep_list):
"""
Take our dependency list and turn it into a list of Dependency objects.
"""
dependency_list = []
for i in xrange(0, len(dep_list), 2):
d = Dependency(dep_list[i], dep_list[i+1])
dependency_list.append(d)
return dependency_list
def output_to_json(self):
"""
Output our self to a dict that can be used in a json.dumps()
"""
context = {
'name': self.name,
'version': self.version,
'dependencies': [c.output_to_json() for c in self.dependency_list]
}
return context
class Dependency(object):
def __init__(self, name, version):
self.name = name
self.version = version
def output_to_json(self):
context = {
'name': self.name,
'version': self.version
}
return context
def make_classes_from_list(list_of_scripts):
"""
Take your list of numbers and turn it into a list of Script
and Dependency objects.
"""
output = []
for i in xrange(0, len(list_of_scripts), 3):
s = Script(list_of_scripts[i], list_of_scripts[i+1], list_of_scripts[i+2])
output.append(s)
return output
listOfScripts = [20, 3, [39, 2, 30, 4], 21, 4, [65, 9, 12, 5]]
list_of_script_objects = make_classes_from_list(listOfScripts)
print(json.dumps([x.output_to_json() for x in list_of_script_objects]))
will then output:
[{"version": 3, "name": 20, "dependencies": [{"version": 2, "name": 39}, {"version": 4, "name": 30}]}, {"version": 4, "name": 21, "dependencies": [{"version": 9, "name": 65}, {"version": 5, "name": 12}]}]
import json
class Script(object):
def __init__(self, name, version, dependency):
self.name = name
self.version = version
self.dependency = dependency
def toJSON(self):
return dict(name = self.name, version = self.version, dependency = self.dependency)
class Dependency(object):
def __init__(self, name, version):
self.name = name
self.version = version
def toJSON(self):
return dict(name = self.name, version = self.version)
class ComplexEncoder(json.JSONEncoder):
def default(self, obj):
if hasattr(obj,'toJSON'):
return obj.toJSON()
else:
return json.JSONEncoder.default(self, obj)
listOfScripts = [Script(20, 3, [Dependency(39, 2), Dependency(30, 4)]),
Script(21, 4, [Dependency(65, 9), Dependency(12, 5)])]
print([json.dumps(x.toJSON(), cls=ComplexEncoder) for x in listOfScripts])
the output is:
['{"name": 20, "version": 3, "dependency": [{"name": 39, "version": 2}, {"name": 30, "version": 4}]}', '{"name": 21, "version": 4, "dependency": [{"name": 65, "version": 9}, {"name": 12, "version": 5}]}']
