Category "pandas"

Python pandas: Why does df.iloc[:, :-1].values for my training data select till only the second last column?

Very simply put, For the same training data frame df, when I use X = df.iloc[:, :-1].values, it will select till the second last column of the data frame ins

Removing Outliers

I tried removing outliers using the following function I created, but I am getting weird values after using it. Is my way of removing outliers correct? def rem

Wide to long data transform in pandas

I have a dataset in the following format: county area pop_2006 pop_2007 pop_2008 01001 275 1037 1052 1102 01003 394 2

Read_sql returning results even though SQL table not present

I think I've lost my mind. I have created a python script to read a temp table in SQL SSMS. While testing, we found out that python is able to query and read

Groupby & Sum - Create new column with added If Condition

I have the below DataFrame: ID Start End Variance 1 100000 120000 20000 1 1 0 -1 1

Preserve Dataframe column data type after outer merge

When you merge two indexed dataframes on certain values using 'outer' merge, python/pandas automatically adds Null (NaN) values to the fields it could not match

How can I map True/False to 1/0 in a Pandas DataFrame?

I have a column in python pandas DataFrame that has boolean True/False values, but for further calculations I need 1/0 representation. Is there a quick pandas/n

get dataframe row count based on conditions

I want to get the count of dataframe rows based on conditional selection. I tried the following code. print df[(df.IP == head.idxmax()) & (df.Method == 'HE

get dataframe row count based on conditions

I want to get the count of dataframe rows based on conditional selection. I tried the following code. print df[(df.IP == head.idxmax()) & (df.Method == 'HE

Convert DataFrame column type from string to datetime

How can I convert a DataFrame column of strings (in dd/mm/yyyy format) to datetimes?

How do I select rows from a DataFrame based on column values?

How can I select rows from a DataFrame based on values in some column in Pandas? In SQL, I would use: SELECT * FROM table WHERE column_name = some_value