Chilkat2-Python
Chilkat2-Python
Count the Related Items in an Email
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Demonstrates the read-only Chilkat Email.NumRelatedItems property, which is the number of related MIME items in the email. Related items are resources — such as images or style sheets — embedded with an HTML body in a multipart/related enclosure, and are commonly referenced by the HTML using a cid: URL or a Content-Location. Indexes are zero-based. This example sets an HTML body, adds a related item, and prints the count.
Background: When an HTML email shows an image that travels inside the message (rather than being downloaded from the web), the image is a "related item." The HTML references it with
<img src="cid:logo.png">, and a matching part carries a Content-ID of logo.png. The whole bundle lives in a multipart/related enclosure. This is different from an attachment: related items are meant to be displayed as part of the body, not saved as separate files.Chilkat Chilkat2-Python Downloads
import chilkat2
# Demonstrates the read-only Email.NumRelatedItems property. Related items are
# resources (such as images or style sheets) embedded alongside an HTML body in a
# multipart/related enclosure, typically referenced from the HTML by a cid: URL.
email = chilkat2.Email()
# Set an HTML body that references a related item by content-id.
email.SetHtmlBody("<html><body><img src=\"cid:logo.png\"/></body></html>")
# Add the related item. AddRelatedString returns the content-id assigned to it.
# The empty charset argument means no charset conversion is applied.
cid = email.AddRelatedString("logo.png","(pretend this is image data)","")
print("Related content-id = " + cid)
print("NumRelatedItems = " + str(email.NumRelatedItems))