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+--- Thread: empty lines in source code (/thread-33840.html)
empty lines in source code - Skaperen - Jun-01-2021
is it safe to discard empty lines in Python source code other than a multi-line triple quote? i need to keep source code for EC2 instance userdata as small as possible so i want to have the processing throw out empty lines.
RE: empty lines in source code - Gribouillis - Jun-01-2021
As far as I know it is perfectly safe.
RE: empty lines in source code - DeaD_EyE - Jun-01-2021
(Jun-01-2021, 12:48 AM)Skaperen Wrote: i need to keep source code for EC2 instance userdata as small as possible so i want to have the processing throw out empty lines.
User-Data is saved in Python-Code?!
Then just compile them and use the compiled pyc. They are much smaller than source code.
RE: empty lines in source code - Skaperen - Jun-01-2021
normally AWS userdata is done in bash. if the AMI expects something different it can do anything. the default is to check the #! and if the command is recognized, run it. unfortunately, python is not recognized. so i am embedding it,, compressed, in a bash script. doing this pre-compiled will be even better.
it turns out i will have the script in memory. is there a way to pre-compile it memory with some python calls? there will be 3 files:
1. the userdata script with places to insert certain data.
2. the user config file with level 2 settings (level 1 are hard coded default in the submit script and level 3 is the command line).
3. the submit script. it merges settings. sets up userdata, submits the instance (spot request if a price is in the settings).
RE: empty lines in source code - Gribouillis - Jun-02-2021
Back to the original question, if your file starts with two blank lines then a comment such as
# coding: latin-1python will assume that the file is encoded in utf8, but if you remove the blank lines, it will assume that the file is encoded in latin-1.
RE: empty lines in source code - Skaperen - Jun-02-2021
why would i use
# coding: latin-1?
RE: empty lines in source code - Gribouillis - Jun-02-2021
Well some people encode their files in latin-1 encoding and it is still valid Python source code. The question didn't imply it was only your code and that you never encode in latin-1.