I have images loaded with cv2 in python. After detecting the edges using cv2.Canny I want to draw boxes around the objects in the image. Give me an example in python.
Sure! Here's an example in Python:

```py
import cv2

# Load image and convert to grayscale
img = cv2.imread('your_image.jpg')
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

# Perform Canny edge detection
edges = cv2.Canny(gray, 100, 200)

# Find contours of objects in the image
contours, hierarchy = cv2.findContours(edges, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)

# Draw bounding boxes around each object
for cnt in contours:
    x,y,w,h = cv2.boundingRect(cnt)
    cv2.rectangle(img,(x,y),(x+w,y+h),(0,255,0),2)

# Display result
cv2.imshow('Image with bounding boxes', img)
cv2.waitKey(0)
cv2.destroyAllWindows()

```
In this code, we first load the image and convert it to grayscale. We then use the `cv2.Canny()` function to detect edges in the image. Next, we use `cv2.findContours()` to find the contours of objects in the image. Finally, we loop through each contour and use `cv2.rectangle()` to draw a bounding box around the object.

You can adjust the parameters of `cv2.Canny()` and `cv2.findContours()` to change the sensitivity of edge detection and contour detection, respectively.