title: NameError: name 'args' is not defined?
body: <p>I am trying out the code given in <a href="https://www.pyimagesearch.com/2018/02/26/face-detection-with-opencv-and-deep-learning/?__s=zxeickrdq5xagzqfnz7z" rel="nofollow noreferrer">https://www.pyimagesearch.com/2018/02/26/face-detection-with-opencv-and-deep-learning/?__s=zxeickrdq5xagzqfnz7z</a></p>
  
  <pre><code>import numpy as np
  import argparse
  import cv2
  
  ap = argparse.ArgumentParser()
  ap.add_argument("-i", "-C:/datasets/FACE/IMG_0375", required=True,help="path to input image")
  ap.add_argument("-p", "-C:/datasets/FACE/deploy.prototxt", required=True,help="path to Caffe 'deploy' prototxt file")
  ap.add_argument("-m", "-C:/datasets/FACE/res10_300x300_ssd_iter_140000", required=True,help="path to Caffe pre-trained model")
  
  # load our serialized model from disk
  print("[INFO] loading model...")
  net = cv2.dnn.readNetFromCaffe(args["-p"], args["-m"])
  
  # load the input image and construct an input blob for the image
  # by resizing to a fixed 300x300 pixels and then normalizing it
  image = cv2.imread(args["-i"])
  (h, w) = image.shape[:2]
  blob = cv2.dnn.blobFromImage(cv2.resize(image, (300, 300)), 1.0, (300,    300), (104.0, 177.0, 123.0))
  
  # load our serialized model from disk
  print("[INFO] loading model...")
  net = cv2.dnn.readNetFromCaffe(args["-p"], args["-m"])
  
  # load the input image and construct an input blob for the image
  # by resizing to a fixed 300x300 pixels and then normalizing it
  image = cv2.imread(args["-i"])
  (h, w) = image.shape[:2]
  blob = cv2.dnn.blobFromImage(cv2.resize(image, (300, 300)), 1.0,
  (300, 300), (104.0, 177.0, 123.0))
  </code></pre>
  
  <p>The following is the error message displayed:</p>
  
  <pre><code>[INFO] loading model...
  
  ---------------------------------------------------------------------------
  NameError                                 Traceback (most recent call last)
  &lt;ipython-input-9-f999c8fd8971&gt; in &lt;module&gt;
    1 # load our serialized model from disk
    2 print("[INFO] loading model...")
  ----&gt; 3 net = cv2.dnn.readNetFromCaffe(args["-p"], args["-m"])
    4 
    5 # load the input image and construct an input blob for the image
  
  NameError: name 'args' is not defined
  </code></pre>
  
  <p>As I expect ap = argparse.ArgumentParser() to allow me to use args, why am I getting this error?</p>