I’m trying to create an application in Python 3.2 and I use tabs all the time for indentation, but even the editor changes some of them into spaces and then print out “inconsistent use of tabs and spaces in indentation” when I try to run the program. How can I change the spaces into tabs? … Read more
Why am I getting this error? I’m confused. What do you need to know to answer my question?
To accomplish this, you will need a database of viable words. An english dictionary will do. One way is to check for words in the database that are anagrams of the jumbled string. Here’s a naive algo: read the viable words into an appropriate data structure a python dict or tuple will suffice. Assume the … Read more
Using exit_flag.wait(timeout=DELAY) will be more responsive, because you’ll break out of the while loop instantly when exit_flag is set. With time.sleep, even after the event is set, you’re going to wait around in the time.sleep call until you’ve slept for DELAY seconds. In terms of implementation, Python 2.x and Python 3.x have very different behavior. … Read more
The effects of the three different methods to remove an element from a list: remove removes the first matching value, not a specific index: del removes the item at a specific index: and pop removes the item at a specific index and returns it. Their error modes are different too:
You would want and instead of &&.
In Python 3, you can use the sep= and end= parameters of the print function: To not add a newline to the end of the string: To not add a space between all the function arguments you want to print: You can pass any string to either parameter, and you can use both parameters at … Read more
Short Answer It’s boilerplate code that protects users from accidentally invoking the script when they didn’t intend to. Here are some common problems when the guard is omitted from a script: If you import the guardless script in another script (e.g. import my_script_without_a_name_eq_main_guard), then the second script will trigger the first to run at import … Read more
Close: first you call ExcelFile, but then you call the .parse method and pass it the sheet name. What you’re doing is calling the method which lives on the class itself, rather than the instance, which is okay (although not very idiomatic), but if you’re doing that you would also need to pass the sheet … Read more
Every minor version of Python, that is any 3.x and 2.x version, will install side-by-side with other versions on your computer. Only patch versions will upgrade existing installations. So if you want to keep your installed Python 2.7 around, then just let it and install a new version using the installer. If you want to … Read more