Python Pandas Library Learning

Two data structure series and dataframe.

Series

The series is the same as a list in Python, with data and index values.

Here we create a series object. Data values and indexes for series objects:

The index of the list starts at 0, and the series is indexed by default, similar to the list starting with 0. However, you can also customize the index:

Indexes can be redefined:

Operation elements according to index:

Series is also used in the form of dictionaries:

Series Auto Alignment: The corresponding values can be found based on the original index, and no Nan

Determine if the value is empty:

Series Operations:

Size

Subtraction

DataFrame

Dataframe is like a collection of multiple series. This means that it has more than one column of data. Similar to the table.

Create a Dataframe object

The "key" in Dataframe is similar to a dictionary, but one difference is that the order of the keys in the dictionary is fixed and the order of the ' keys ' in the Dataframe can be customized. Similar to the operation of index in a series object. Like this

Access to columns elements, series and dataframe operations

To be continued .....

Python Pandas Library Learning