Python newbie, need help about print statement debug

TonyAn · 05-17-2017, 01:45 PM

I've never written python in the past, but have to toughen my scalp in order to fulfill a rigid demand. I've set up the calibre development environment, but can't use the print statement to debug successfully.

I added print(url) in the 224 lines of src/calibre/ebooks/metadata/sources/douban.py, then calibre-debug -g, select a certain ebook, download its douban metadata successfully....but now, the console only shows the debug information as shown in the below, I can't see any print(url)?

don't understand why...which step is mistake?

[Image violates Posting Guidelines for size - MODERATOR]

kovidgoyal · 05-17-2017, 01:55 PM

Metadata download happens in a separate process. So it doesn;t output to the console. Instead simply use the view log button in the download metadata notification, it should contain your print statement output

Dr. Drib · 05-17-2017, 02:14 PM

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TonyAn · 05-17-2017, 03:46 PM

Quote:

Originally Posted by kovidgoyal

Metadata download happens in a separate process. So it doesn;t output to the console. Instead simply use the view log button in the download metadata notification, it should contain your print statement output

Ok~ Thanks

05-17-2017, 01:45 PM	#1
TonyAn Junior Member Posts: 5 Karma: 10 Join Date: May 2017 Device: Xiaomi	Python newbie, need help about print statement debug I've never written python in the past, but have to toughen my scalp in order to fulfill a rigid demand. I've set up the calibre development environment, but can't use the print statement to debug successfully. I added print(url) in the 224 lines of src/calibre/ebooks/metadata/sources/douban.py, then calibre-debug -g, select a certain ebook, download its douban metadata successfully....but now, the console only shows the debug information as shown in the below, I can't see any print(url)? don't understand why...which step is mistake? [Image violates Posting Guidelines for size - MODERATOR] Last edited by Dr. Drib; 05-17-2017 at 02:10 PM.

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05-17-2017, 01:55 PM	#2
kovidgoyal creator of calibre Posts: 45,339 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Metadata download happens in a separate process. So it doesn;t output to the console. Instead simply use the view log button in the download metadata notification, it should contain your print statement output

05-17-2017, 02:14 PM	#3
Dr. Drib Grand Sorcerer Posts: 45,437 Karma: 59592133 Join Date: Jan 2007 Location: Peru Device: KINDLE: Oasis 3, Scribe (1st), Matcha; KOBO: Libra 2, Libra Colour	Moderator Notice Please take a few moments to read our Posting Guidelines, in particular the part about the maximum image size allowed (600x600 pixels). Images that violate those guidelines may be deleted. It is every member's responsibility to read our Posting Guidelines and follow them. Thanks.

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