I once wrote a bot in python tdownloaded a ical file, looked for chances and informed me if found. The space indentation made it hell to follow the code in my opinion.
Just curious, what about spaces made it hard? What language would have been easier? In curly brace languages, 99% of the time, a curly brace is followed by a line break and an indent. Python is similar except it’s typically a colon, line break, then indent.
What I have learned is: If the code is indented too deeply, it’s a code problem, not the language.
Too much nested code was likely part of the problem, but not being able to easily tell where a block of coded ended without seeing the top of the block made it difficult to work with.
That’s fair! Takes time to get used to. Modern editors make this easier by highlighting the current indent level, or can even make the top X lines of the current closure “stick” to the top of the editor for those really long blocks.
Having those features would really have made it easier. I have only ever written my python code in Sublime Text. While it is a sublime text editor, at is not ideal (compared to how it is to write Java in IntelliJ) for Python. (Maybe with addons but I never delved into that more than a few.)
Correct, I linked the source of the quote. My implication is the general idea is applicable here. Is python one of these languages where it is idiomatic to nest code deeply?
It’s because there is no clear indication of where a block ends.
Here is some sample code. I find it difficult to tell how many indentations I have or where I need to write if I want to continue at a certain level.
import time
import aiohttp
"""
Retreives the data from RSS URL and return the status codes as well as the data. Return -1 if something went wrong.
"""asyncdefget_rss_feed(rss_url):
asyncwith aiohttp.ClientSession() as session:
try:
retry_count = 0while retry_count < 5:
asyncwith session.get(rss_url) as resp:
if resp.status == 200:
return {'status': resp.status, 'data': await resp.text()}
else:
retry_count += 1
time.sleep(60)
if retry_count == 5:
raise ValueError('To many failed connection attempts', retry_count)
except aiohttp.InvalidURL as error:
return {'status': -1, 'data': f"Error: {rss_url} is not a valid URL.", 'error': error}
except aiohttp.ClientConnectorError as error:
return {'status': -1, 'data': f"Error: Could not connect to {rss_url}.", 'error': error}
except ValueError as error:
return {'status': -1, 'data': f"Error: Could not connect to {rss_url} after {retry_count} attempts.", 'error': error}
I once wrote a bot in python tdownloaded a ical file, looked for chances and informed me if found. The space indentation made it hell to follow the code in my opinion.
Just curious, what about spaces made it hard? What language would have been easier? In curly brace languages, 99% of the time, a curly brace is followed by a line break and an indent. Python is similar except it’s typically a colon, line break, then indent.
What I have learned is: If the code is indented too deeply, it’s a code problem, not the language.
Torvalds infamously wrote:
Too much nested code was likely part of the problem, but not being able to easily tell where a block of coded ended without seeing the top of the block made it difficult to work with.
That’s fair! Takes time to get used to. Modern editors make this easier by highlighting the current indent level, or can even make the top X lines of the current closure “stick” to the top of the editor for those really long blocks.
Having those features would really have made it easier. I have only ever written my python code in Sublime Text. While it is a sublime text editor, at is not ideal (compared to how it is to write Java in IntelliJ) for Python. (Maybe with addons but I never delved into that more than a few.)
Torvalds wrote this about C. There’s plenty languages where it’s much more common and less of a complexity indicator to open up scopes.
Correct, I linked the source of the quote. My implication is the general idea is applicable here. Is python one of these languages where it is idiomatic to nest code deeply?
The Zen of Python:
From the python I have seen and written, deep nesting is avoided.
I don’t get it because my phyton code is indented exactly the same as all my other code. Each block of code one tab in/out, how else would you do it?
It’s because there is no clear indication of where a block ends.
Here is some sample code. I find it difficult to tell how many indentations I have or where I need to write if I want to continue at a certain level.
import time import aiohttp """ Retreives the data from RSS URL and return the status codes as well as the data. Return -1 if something went wrong. """ async def get_rss_feed(rss_url): async with aiohttp.ClientSession() as session: try: retry_count = 0 while retry_count < 5: async with session.get(rss_url) as resp: if resp.status == 200: return {'status': resp.status, 'data': await resp.text()} else: retry_count += 1 time.sleep(60) if retry_count == 5: raise ValueError('To many failed connection attempts', retry_count) except aiohttp.InvalidURL as error: return {'status': -1, 'data': f"Error: {rss_url} is not a valid URL.", 'error': error} except aiohttp.ClientConnectorError as error: return {'status': -1, 'data': f"Error: Could not connect to {rss_url}.", 'error': error} except ValueError as error: return {'status': -1, 'data': f"Error: Could not connect to {rss_url} after {retry_count} attempts.", 'error': error}