I think I will just share my working sample code here to save someone’s time

import requests

# local file
with open('image.jpg', 'rb') as file:
    resp = requests.post('http://localhost:8888/image', data=file.read())
    url = resp.headers['Location']

# remote file
remote_resp = requests.get(image_url, stream=True)
resp = requests.post('http://localhost:8888/image', data=remote_resp.content)
url = resp.headers['Location']

from

self.execute_command(command, cwd=os.path.dirname(infile))

to

logger.debug(self.execute_command(command, cwd=os.path.dirname(infile)))

One of the team lead pointed out the statement has a problem, and it was a life saver, but I won’t tell you why just yet, see if you can spot it.

import cv2, time

cap = cv2.VideoCapture(0)
time.sleep(1)
cascade = cv2.CascadeClassifier("haarcascade_frontalface_alt.xml")

def detect(image):
    #faces = cascade.detectMultiScale(img, 1.1, 2, cv2.cv.CV_HAAR_SCALE_IMAGE, (20,20), (200,200))
    faces = cascade.detectMultiScale(image)
    for _face in faces:
        cv2.rectangle(image, (_face[0], _face[1]), (_face[0]+_face[2], _face[1]+_face[3]), (255,255,255))

def repeat():
    ret, image = cap.read()
    detect(image)
    cv2.imshow("w1", image)
    cv2.waitKey(1)

while True:
    repeat()

Installation:

1. pip install numpy (sometimes you might need to run as sudo)
2. brew tap homebrew/science
3. brew install opencv
4. export PYTHONPATH=/usr/local/Cellar/opencv/2.4.7.1/lib/python2.7/site-packages/
5. download the xml file https://warai.googlecode.com/files/haarcascade_frontalface_alt.xml and place it in the same folder.

import datetime
from haystack import indexes   
from cms.models.managers import PageManager
from cms.models.pagemodel import Page
from cms.models.pluginmodel import CMSPlugin


class PageIndex(indexes.SearchIndex, indexes.Indexable):
    text = indexes.CharField(document=True, use_template=False)
    pub_date = indexes.DateTimeField(model_attr='publication_date', null=True)
    login_required = indexes.BooleanField(model_attr='login_required')
    url = indexes.CharField(model_attr='get_absolute_url')
    title = indexes.CharField(model_attr='get_title')

    def prepare(self, obj):    
        self.prepared_data = super(PageIndex, self).prepare(obj)
        plugins = CMSPlugin.objects.filter(placeholder__in=obj.placeholders.all())
        text = ''              
        for plugin in plugins: 
            instance, _ = plugin.get_plugin_instance()
            if hasattr(instance, 'search_fields'):
                text += ''.join(getattr(instance, field) for field in instance.search_fields)
        text += obj.get_meta_description() or u''
        text += obj.get_title() or u''
        text += obj.get_meta_keywords() if hasattr(obj, 'get_meta_keywords') and obj.get_meta_keywords() else u''
        self.prepared_data['text'] = text
        return self.prepared_data       

    def get_model(self):
        return Page

    def index_queryset(self, using=None):
        return Page.objects.published().filter(publisher_is_draft=False).distinct()

when you have a unicode function like this:

def __unicode__(self):
  return "{0}".format(self.field_one)

It is actually returning a ASCII string(which means, it will try to convert field_one to ASCII), if the field_one contains characters outside of ASCII, you will get the problem as above.

Now consider this unicode function:

def __unicode__(self):
      return self.field_one

This works fine, because you are returning unicode string directly, no conversion needed.

Lets revisit the first unicode function, to make it work, you just need to add u to make it a unicode string

def __unicode__(self):
      return u"{0}".format(self.field_one)

//www.youtube.com/watch?v=c3C3hYbo37c