Get column index from column name in python pandas
In R when you need to retrieve a column index based on the name of the column you could do
python
Merging dictionary value lists in python
I’m trying to merge three dictionaries, which all have the same keys, and either lists of values, or single values.
Pandas: change data type of Series to String
I use Pandas ‘ver 0.12.0’ with Python 2.7 and have a dataframe as below:
How to update SQLAlchemy row entry?
Assume table has three columns: username, password and no_of_logins.
How to obscure a line behind a surface plot in matplotlib?
I want to plot data using Matplotlib via a colormap on the surface of a sphere. Additionally, I would like to add a 3D line plot. The code I have so far is this:
How to make lists contain only distinct element in Python?
I have a list in Python, how can I make it’s values unique? Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & … Read more
Time complexity of string concatenation in Python
I’m analysing the complexity of my code. From what I found online, since strings are immutable in python, a concatenation of a string and a character should be O(len(string) + 1). Now, here is my piece of code (simplified): word = "" for i in range(m): word = char_value + word return word The total … Read more
python list comprehensions; compressing a list of lists?
guys. I’m trying to find the most elegant solution to a problem and wondered if python has anything built-in for what I’m trying to do.
Can’t open lib ‘ODBC Driver 13 for SQL Server’? Sym linking issue?
When I try to connect to a sql server database with pyodbc (on mac):
GroupBy column and filter rows with maximum value in Pyspark
I am almost certain this has been asked before, but a search through stackoverflow did not answer my question. Not a duplicate of [2] since I want the maximum value, not the most frequent item. I am new to pyspark and trying to do something really simple: I want to groupBy column “A” and then only keep the row of each group that has the maximum value in column “B”. Like this: