Getting the names of all the columns and number of rows in a data frame with Python Pandas

Question

I would like to list all the columns, and the number of rows in a Pandas data.frame. For example, suppose that my data frame df looks like:

    field1   field2
 x    x1        1
 y    y1        4

I would like to be able to run:

> df.columns()
['field1','field2']
> df.nrows() 
2

Is that possible?

Answer 1

Name of columns: a Pandas dataframe has a columns attribute (it's not a function). To get a regular list of columns as strings:

>>> [name for name in df.columns]
['field1','field2']

To get number of rows:

>>> len(df.index)
2