Icecream: Never use print() to debug again in Python • Hacker News Board

Re: Icecream: Never use print() to debug again in Python

#11

Post by Justsignedup » Tue, Mar 30, 2021, 7:03 AM UTC

lots of nay saying here...

i for one like this. sure there are some ways in the new python code to handle some of the features of ic, but the overall feature set is rather nice.

sure it isn't a debugger, but definitely better than prints.

Re: Icecream: Never use print() to debug again in Python

#12

Post by mikkelam » Tue, Mar 30, 2021, 7:04 AM UTC

Why don't people just use a debugger? It boggles my mind that people live with print style debugging. Depending on the project, it can be such a timer waster and just plainly worse in all aspects.

Especially in Pycharm for me, it is incredibly easy. Even when running over ssh in remote computers I can use my debugger.

Re: Icecream: Never use print() to debug again in Python

#13

Post by JetAlone » Tue, Mar 30, 2021, 7:06 AM UTC

grenoire wrote: post #10

kissgyorgy wrote: post #5

You can do the same thing with Python 3.8+ by using f-strings and just appending "=" to the variable name: >>> print(f"{d['key'][1]=}") d['key'][1]='one'

WHAT... Why ain't anybody talking about this? Brilliant!

In this case, it would seem it took a little reinvention in order to let the wheel's discovery be known.

Re: Icecream: Never use print() to debug again in Python

#14

Post by lihaoyi » Tue, Mar 30, 2021, 7:08 AM UTC

We have this in Scala via the PPrint library, which provides 'pprint.log'. pprint.log also shows the filename/line number (so you can find your prints later) and has colored output and intelligent indent-formatting for things than wrap to multiple lines. It's super covenient!

Re: Icecream: Never use print() to debug again in Python

#15

Post by neumann » Tue, Mar 30, 2021, 7:09 AM UTC

kissgyorgy wrote: post #5

You can do the same thing with Python 3.8+ by using f-strings and just appending "=" to the variable name: >>> print(f"{d['key'][1]=}") d['key'][1]='one'

Wait. How does this work?

Re: Icecream: Never use print() to debug again in Python

#16

Post by CodeGlitch » Tue, Mar 30, 2021, 7:10 AM UTC

mikkelam wrote: post #12

Why don't people just use a debugger? It boggles my mind that people live with print style debugging. Depending on the project, it can be such a timer waster and just plainly worse in all aspects. Especially in Pycharm for me, it is incredibly easy. Even when running over ssh in remote computers I can use my debugger.

I find you need both. Print gives you a nice high level view of your code, whilst stepping let's you see what's happening.

I would say I get more use out of printing these days.

Re: Icecream: Never use print() to debug again in Python

#17

Post by chpmrc » Tue, Mar 30, 2021, 7:13 AM UTC

mikkelam wrote: post #12

Why don't people just use a debugger? It boggles my mind that people live with print style debugging. Depending on the project, it can be such a timer waster and just plainly worse in all aspects. Especially in Pycharm for me, it is incredibly easy. Even when running over ssh in remote computers I can use my debugger.

What do you use for remote debugging? And do you run all production instances with a debugging server attached? What's the overhead?

Re: Icecream: Never use print() to debug again in Python

#18

Post by selcuka » Tue, Mar 30, 2021, 7:13 AM UTC

neumann wrote: post #15

kissgyorgy wrote: post #5

You can do the same thing with Python 3.8+ by using f-strings and just appending "=" to the variable name: >>> print(f"{d['key'][1]=}") d['key'][1]='one'

Wait. How does this work?

https://bugs.python.org/issue36817

Re: Icecream: Never use print() to debug again in Python

#19

Post by globular-toast » Tue, Mar 30, 2021, 7:13 AM UTC

mikkelam wrote: post #12

Why don't people just use a debugger? It boggles my mind that people live with print style debugging. Depending on the project, it can be such a timer waster and just plainly worse in all aspects. Especially in Pycharm for me, it is incredibly easy. Even when running over ssh in remote computers I can use my debugger.

For me it's just lack of practice. This is rare enough for me that I would have to look up how to use the debugger each time. I never forget how to type print.

Re: Icecream: Never use print() to debug again in Python

#20

Post by extrememacaroni » Tue, Mar 30, 2021, 7:14 AM UTC

mikkelam wrote: post #12

Why don't people just use a debugger? It boggles my mind that people live with print style debugging. Depending on the project, it can be such a timer waster and just plainly worse in all aspects. Especially in Pycharm for me, it is incredibly easy. Even when running over ssh in remote computers I can use my debugger.

uncle bob told me you don't wanna be good at using a debugger

print("here") till the day i die!!!