How to return 0 with divide by zero
I’m trying to perform an element wise divide in python, but if a zero is encountered, I need the quotient to just be zero.
error-handling
LBYL vs EAFP in Java?
I was recently teaching myself Python and discovered the LBYL/EAFP idioms with regards to error checking before code execution. In Python, it seems the accepted style is EAFP, and it seems to work well with the language.
Python giving FileNotFoundError for file name returned by os.listdir
I was trying to iterate over the files in a directory like this:
Failed to catch syntax error python
try: x===x except SyntaxError: print "You cannot do that" outputs x===x ^ SyntaxError: invalid syntax this does not catch it either try: x===x except: print "You cannot do that" Other errors like NameError, ValueError, are catchable. Thoughts? System specs: import sys print(sys.version) -> 2.7.5 (default, Mar 9 2014, 22:15:05) [GCC 4.2.1 Compatible Apple LLVM 5.0 … Read more
Python Multiprocessing: Handling Child Errors in Parent
I am currently playing around with multiprocessing and queues.
I have written a piece of code to export data from mongoDB, map it into a relational (flat) structure, convert all values to string and insert them into mysql.
Builtin function not working with Spyder
I’m trying to use the max function in Python 3,6:
How to solve “OSError: telling position disabled by next() call”
I am creating a file editing system and would like to make a line based tell() function instead of a byte based one. This function would be used inside of a “with loop” with the open(file) call. This function is part of a class that has:
Hide traceback unless a debug flag is set
What is the idiomatic python way to hide traceback errors unless a verbose or debug flag is set?
Why is pattern “command || true” useful?
I am currently exploring Debian packages, and I have been reading some code samples. And on every line in, for example, the postinst script is a pattern.
What are the standard error codes in Linux?
When I write Bash code, for example to copy files, if a file doesn’t exist, in the terminal I see an error similar to file not found. If the user running the script doesn’t have the necessary permissions, the error is similar to permission denied.