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class Track:
    def print_result(self, name, start_time, end_time):
        time_delta = end_time - start_time
        result = '%r took: %2.4f sec' % (name, time_delta)
        print(result)

    def time(self, func):
        @wraps(func)
        def func_wrapper(*args, **kwargs):
            start_time = time.time()

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How to run imageproxy

1. Install go if you haven't so far
   • Mac (homewbrew): brew install go
   • Ubuntu: sudo apt-get install golang-go
   • Other: https://golang.org/doc/install#install
2. Install imageproxy
   • Using standalone installation:
     • go get willnorris.com/go/imageproxy/cmd/imageproxy

• go build willnorris.com/go/imageproxy/cmd/imageproxy

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ImageProxy Run times

LOCAL:

Memory cache

timeit.timeit("requests.get('http://127.0.0.1:8080/200/http://127.0.0.1:8000/media/product_images/egg.jpg?a={}'.format(random.randint(100, 400)))", "import requests; import random", number=100)

100 calls = 3.4494818639941514

No cache

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from django.template.loader import get_template


class ValidationError(Exception):
    pass


class Field:
    def __init__(self, default=None, required=False, allowed_type=None):
        self.allowed_type = allowed_type

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from django.template.loader import get_template


class ValidationError(Exception):
    pass


class Field:
    def __init__(self, default=None, required=False, allowed_type=None):
        self.allowed_type = allowed_type

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def convert(name, remove_ns=True):
    s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', name)

    # remove namespaces
    if remove_ns:
        s1 = re.sub(r'^\{http.*\}', '', s1)

    return re.sub('([a-z0-9])([A-Z])', r'\1_\2', s1).lower()

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class CxmlNode:
    dtd = etree.DTD(dtd_file)

    def __init__(self, *args, **kwargs):
        self.payload_id = kwargs['payload_id']
        self.timestamp = kwargs.get('timestamp')  # datetime.now().isoformat()

    def __str__(self):
        return self.render().decode('UTF-8')

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Prerequisites

• Install https://networkx.github.io/documentation/latest/install.html

• Install https://django-extensions.readthedocs.io/en/latest/installation_instructions.html

• Follow this: https://django-extensions.readthedocs.io/en/latest/graph_models.html

• Remove all old migrations.

• Remove all entries out of the django_migrations table.