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:
python
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):
Element-wise addition of 2 lists?
Use map with operator.add: or zip with a list comprehension: Timing comparisons:
How to save an image locally using Python whose URL address I already know?
Python 2 Here is a more straightforward way if all you want to do is save it as a file: The second argument is the local path where the file should be saved. Python 3 As SergO suggested the code below should work with Python 3.
No module named django but it is installed
Probably, pip installs packages into dist-packages directory, which is not included into PYTHONPATH environment variable. You have a couple of solutions: Create and configure virtualenv for your project, before using pip. This is the most Pythonic way Try to install Django using built-in pip module:python -m pip install django This command should install packages into site-packages directory. You may also add dist-packages to your PYTHONPATH. This question should help you: How to globally … Read more
How do I update a Python package?
You might want to look into a Python package manager like pip. If you don’t want to use a Python package manager, you should be able to download M2Crypto and build/compile/install over the old installation.
No module named urllib3
Either urllib3 is not imported or not installed. To import, use at the top of the file. To install write: into terminal. It could be that you did not activate the environment variable correctly. To activate the environment variable, write into terminal. Here env is the environment variable name.