How to export Pandas DataFrame to a CSV file?

Last Updated : 10 Jul, 2020

Let us see how to export a Pandas DataFrame to a CSV file. We will be using the to_csv() function to save a DataFrame as a CSV file.

DataFrame.to_csv()

Syntax : to_csv(parameters) Parameters :

path_or_buf : File path or object, if None is provided the result is returned as a string.

sep : String of length 1. Field delimiter for the output file.

na_rep : Missing data representation.

float_format : Format string for floating point numbers.

columns : Columns to write.

header : If a list of strings is given it is assumed to be aliases for the column names.

index : Write row names (index).

index_label : Column label for index column(s) if desired. If None is given, and header and index are True, then the index names are used.

mode : Python write mode, default ‘w’.

encoding : A string representing the encoding to use in the output file.

compression : Compression mode among the following possible values: {‘infer’, ‘gzip’, ‘bz2’, ‘zip’, ‘xz’, None}.

quoting : Defaults to csv.QUOTE_MINIMAL.

quotechar : String of length 1. Character used to quote fields.

line_terminator : The newline character or character sequence to use in the output file.

chunksize : Rows to write at a time.

date_format : Format string for datetime objects.

doublequote : Control quoting of quotechar inside a field.

escapechar : String of length 1. Character used to escape sep and quotechar when appropriate.

decimal : Character recognized as decimal separator. E.g. use ‘,’ for European data.

Returns : None or str

Example 1 :

Python3 1==

# importing the module
import pandas as pd

# creating the DataFrame
my_df = {'Name': ['Rutuja', 'Anuja'], 
         'ID': [1, 2], 
         'Age': [20, 19]}
df = pd.DataFrame(my_df)

# displaying the DataFrame
print('DataFrame:\n', df)
 
# saving the DataFrame as a CSV file
gfg_csv_data = df.to_csv('GfG.csv', index = True)
print('\nCSV String:\n', gfg_csv_data)

Output : Before executing the code:

After executing the code:

We can clearly see the .csv file created. Also, the output of the above code includes the index, as follows.

Example 2 : Converting to a CSV file without the index. If we wish not to include the index, then in the index parameter assign the value False.

Python3 1==

# importing the module
import pandas as pd

# creating the DataFrame
my_df = {'Name': ['Rutuja', 'Anuja'], 
         'ID': [1, 2], 
         'Age': [20, 19]}
df = pd.DataFrame(my_df)

# displaying the DataFrame
print('DataFrame:\n', df)
 
# saving the DataFrame as a CSV file
gfg_csv_data = df.to_csv('GfG.csv', index = False)
print('\nCSV String:\n', gfg_csv_data)

Output:

Example 3 : Converting to a CSV file without the header of the rows. If we wish not to include the header, then in the headerparameter assign the value False.

Python3 1==

# importing the module
import pandas as pd

# creating the DataFrame
my_df = {'Name': ['Rutuja', 'Anuja'], 
         'ID': [1, 2], 
         'Age': [20, 19]}
df = pd.DataFrame(my_df)

# displaying the DataFrame
print('DataFrame:\n', df)
 
# saving the DataFrame as a CSV file
gfg_csv_data = df.to_csv('GfG.csv', header = False)
print('\nCSV String:\n', gfg_csv_data)