数据分析week01

Scientifics Computing Libraries in Python

Visualization Libraries

Algorithmic Libraries

Printing the dataframe

• df prints the entire dataframe(not recommended for large datasets)
• df.head(n) to show the first n rows of data frame
• df.tail(n) to show the bottom n rows of data frame

adding headers

• headers = ["header1","header2","header3"]
• Replace default header by df.colums=headers

read or save file

• (this course only read and save .csv file
• readpd.read_csv()and savedf.to_csv()`