Introduction
What DataFrames are
DataFrame columns
DataFrame rows
Filtering rows and columns
Filtering data frames
Instruction
Good. From now on, we will be using CSV files as our data sources. CSV files are simple text files that can store tabular data (similar to Excel spreadsheets). For instance, if you have the following table:
| Full Name | Age | Nationality |
|---|---|---|
| Mark Smith | 28 | British |
| Jan Nowak | 37 | Polish |
| Oda Nobunaga | 62 | Japanese |
| Frank Johnson | 19 | American |
Its CSV counterpart would look like:
Full Name,Age,Nationality Mark Smith,28,British Jan Nowak,37,Polish Oda Nobunaga,62,Japanese Frank Johnson,19,American
As you can see, a CSV stands for comma-separated values (hence the name). The first row typically stores column names (although it may be omitted). Subsequent rows store values. Instead of commas, other text delimiters may be used, such as semicolons (;).
Exercise
Click to continue.
