read_csv is the go-to method for reading CSV files in pandas. It can also be used to read txt files. The syntax of using read_csv is shown in the following code:
pd.read_csv(filepath, sep=', ', dtype=None, header=None, names=None, skiprows=None, index_col=None, skip_blank_lines=TRUE, na_filter=TRUE)
The parameters of the read_csv method are as follows:
- filepath: A string or filename with or without a filepath.
- dtype: Can be passed as a dictionary containing name and type as a key-value pair. Specifies the data type of the column name. Generally, pandas guesses the type of columns based on the first few rows.
- header: True/False. This specifies whether the first row in the data is a header or not.
- names: List. Specifies column names for all the columns of a dataset.
- skiprows: List. Skip certain rows of data by specifying row indices.
- index_col: Series/List. Specifies the column that can work as a row number/identifier.
- skip_blank_lines: True/False. Specifies whether to skip blank lines or not.
- na_filter: True/False. Specifies whether to filter NA values or not.
- usecols: List. Returns the subset of data with columns in the passed list.
The read_csv method returns a DataFrame. The following are some examples of reading files using the read_csv method.