vlemaistre questions

vlemaistre answers

• concatenate several lines in one with a delimiter with pandas
• How to append a list to pandas column, series?
• Dropping duplicate records ignoring case
• Sometimes the eigenvectors calculated in python and mathematica have opposite signs anyone know why?
• Using Hyper-parameters from H2O to re-build XGBoost in Sklearn gives Difference Performance in Python
• How to write cache function or equivalent in Python?
• Slicing Dataframe column based on length of strings
• How to extract sklearn decision tree rules to pandas boolean conditions?
• F string list comprehensions example needed