alko questions

alko answers

• How to maintain a strict alternating pattern of item "types" in a list?
• query a pandas dataframe based in index and datacolumns
• simple/efficient way to expand a pandas dataframe
• Simple way to append a pandas series with same index
• creating list of random numbers in python
• Multiplying Block Matrices in Numpy
• how to use groupby to avoid loop in python
• dir and help not showing all attributes of an object in python?
• Flatten a column with value of type list while duplicating the other column's value accordingly in Pandas
• python '__file__' is not defined [duplicate]