Checking if a string can be converted to float in Python
I would just use.. ..it’s simple, and it works. Note that it will still throw OverflowError if element is e.g. 1<<1024. Another option would be a regular expression:
Python
Negation in Python
The negation operator in Python is not. Therefore just replace your ! with not. For your example, do this: For your specific example (as Neil said in the comments), you don’t have to use the subprocess module, you can simply use os.mkdir() to get the result you need, with added exception handling goodness. Example:
Python: Making a beep noise
On Windows, if you want to just make the computer make a beep sound: The winsound.Beep() can be used wherever you want the beep to occur.
Open File in Another Directory (Python)
If you know the full path to the file you can just do something similar to this. However if you question directly relates to relative paths, that I am unfamiliar with and would have to research and test. Edit: Here is a way to do it relatively instead of absolute. Not sure if this works … Read more
How to throw error and exit with a custom message in python
Calling sys.exit with a string will work. The docs mention this use explicitly: In particular, sys.exit(“some error message”) is a quick way to exit a program when an error occurs.
How to convert index of a pandas dataframe into a column
either: or, .reset_index: so, if you have a multi-index frame with 3 levels of index, like: and you want to convert the 1st (tick) and 3rd (obs) levels in the index into columns, you would do:
TypeError: expected str, bytes or os.PathLike object, not _io.TextIOWrapper
I am trying to open, read, modify, and close a json file using the example here: How to add a key-value to JSON data retrieved from a file with Python? I keep getting an error at the end (with open(jsonFile…) that I can’t use the jsonFile variable with open(). I used the exact format as … Read more
What is the purpose of dollar sign in this Python3 string formatting expression?
It has no special meaning. It just inserts a $ character: Sometimes a dollar is just a dollar. You also linked to the wrong documentation; the formatting syntax documented there only applies to the format() function and the str.format() method. You want to look at the printf-style String Formatting section instead.
Converting integer to binary in python
Just to explain the parts of the formatting string: {} places a variable into a string 0 takes the variable at argument position 0 : adds formatting options for this variable (otherwise it would represent decimal 6) 08 formats the number to eight digits zero-padded on the left b converts the number to its binary … Read more
Controlling mouse with Python
Tested on WinXP, Python 2.6 (3.x also tested) after installing pywin32 (pywin32-214.win32-py2.6.exe in my case):