whatstk.whatsapp¶

WhatsApp parser.

whatstk.whatsapp.objects¶

Library WhatsApp objects.

Classes

WhatsAppChat(df) Load and process a WhatsApp chat file.

class whatstk.whatsapp.objects.WhatsAppChat(df)[source]¶

Bases: whatstk._chat.BaseChat

Load and process a WhatsApp chat file.

Parameters:	df (pandas.DataFrame) – Chat.

Attributes

`df`	Chat as DataFrame.
`end_date`	Chat end date.
`start_date`	Chat starting date.
`users`	List with users.

Methods

`from_source`(filepath, **kwargs)	Create an instance from a chat text file.
`from_sources`(filepaths[, auto_header, …])	Load a WhatsAppChat instance from multiple sources.
`merge`(chat[, rename_users])	Merge current instance with `chat`.
`rename_users`(mapping)	Rename users.
`to_csv`(filepath)	Save chat as csv.
`to_txt`(filepath[, hformat])	Export chat to a text file.

Example

This simple example loads a chat using WhatsAppChat. Once loaded, we can access its attribute df, which contains the loaded chat as a DataFrame.

>>> from whatstk.whatsapp.objects import WhatsAppChat
>>> from whatstk.data import whatsapp_urls
>>> chat = WhatsAppChat.from_source(filepath=whatsapp_urls.POKEMON)
>>> chat.df.head(5)
                        username                                            message
date
2016-08-06 13:23:00  Ash Ketchum                                          Hey guys!
2016-08-06 13:25:00        Brock              Hey Ash, good to have a common group!
2016-08-06 13:30:00        Misty  Hey guys! Long time haven't heard anything fro...
2016-08-06 13:45:00  Ash Ketchum  Indeed. I think having a whatsapp group nowada...
2016-08-06 14:30:00        Misty                                          Definetly

property df¶

Chat as DataFrame.

Returns:	pandas.DataFrame

property end_date¶

Chat end date.

Returns:	datetime

classmethod from_source(filepath, **kwargs)[source]¶

Create an instance from a chat text file.

Parameters:	filepath (str) – Path to the file. It can be a local file (e.g. ‘path/to/file.txt’) or an URL to a hosted file (e.g. ‘http://www.url.to/file.txt’) **kwargs – Refer to the docs from `df_from_txt_whatsapp` for details on additional arguments.
Returns:	WhatsAppChat – Class instance with loaded and parsed chat.

See also

classmethod from_sources(filepaths, auto_header=None, hformat=None, encoding='utf-8')[source]¶

Load a WhatsAppChat instance from multiple sources.

Parameters:

filepaths (list) – List with filepaths.
auto_header (bool, optional) – Detect header automatically (applies to all files). If None, attempts to perform automatic header detection for all files. If False, hformat is required.
hformat (list, optional) – List with the header format to be used for each file. The list must be of length equal to len(filenames). A valid header format might be ‘[%y-%m-%d %H:%M:%S] - %name:’.
encoding (str) – Encoding to use for UTF when reading/writing (ex. ‘utf-8’). List of Python standard encodings.

Returns:

WhatsAppChat – Class instance with loaded and parsed chat.

See also

WhatsAppChat.from_source
merge_chats

Example

Load a chat using two text files. In this example, we use sample chats (available online, see urls in source code whatstk.data).

>>> from whatstk.whatsapp.objects import WhatsAppChat
>>> from whatstk.data import whatsapp_urls
>>> filepath_1 = whatsapp_urls.LOREM1
>>> filepath_2 = whatsapp_urls.LOREM2
>>> chat = WhatsAppChat.from_sources(filepaths=[filepath_1, filepath_2])
>>> chat.df.head(5)
                           username                                            message
date
2019-10-20 10:16:00            John        Laborum sed excepteur id eu cillum sunt ut.
2019-10-20 11:15:00            Mary  Ad aliquip reprehenderit proident est irure mo...
2019-10-20 12:16:00  +1 123 456 789  Nostrud adipiscing ex enim reprehenderit minim...
2019-10-20 12:57:00  +1 123 456 789  Deserunt proident laborum exercitation ex temp...
2019-10-20 17:28:00            John                Do ex dolor consequat tempor et ex.

merge(chat, rename_users=None)¶

Merge current instance with chat.

Parameters:	chat (WhatsAppChat) – Another chat. rename_users (dict) – Dictionary mapping old names to new names. Example: {‘John’:[‘Jon’, ‘J’], ‘Ray’: [‘Raymond’]} will map ‘Jon’ and ‘J’ to ‘John’, and ‘Raymond’ to ‘Ray’. Note that old names must come as list (even if there is only one).
Returns:	WhatsAppChat – Merged chat.

See also

Example

Merging two chats can become handy when you have exported a chat in different times with your phone and hence each exported file might contain data that is unique to that file.

In this example however, we merge files from different chats.

>>> from whatstk.whatsapp.objects import WhatsAppChat
>>> from whatstk.data import whatsapp_urls
>>> filepath_1 = whatsapp_urls.LOREM1
>>> filepath_2 = whatsapp_urls.LOREM2
>>> chat_1 = WhatsAppChat.from_source(filepath=filepath_1)
>>> chat_2 = WhatsAppChat.from_source(filepath=filepath_2)
>>> chat = chat_1.merge(chat_2)

rename_users(mapping)¶

Rename users.

This might be needed in multiple occations:

Change typos in user names stored in phone.

If a user appears multiple times with different usernames, group these under the same name (this might
happen when multiple chats are merged).

Parameters:	mapping (dict) – Dictionary mapping old names to new names, example: {‘John’: [‘Jon’, ‘J’], ‘Ray’: [‘Raymond’]} will map ‘Jon’ and ‘J’ to ‘John’, and ‘Raymond’ to ‘Ray’. Note that old names must come as list (even if there is only one).
Returns:	pandas.DataFrame – DataFrame with users renamed according to mapping.
Raises:	ValueError – Raised if mapping is not correct.

Examples

Load LOREM2 chat and rename users Maria and Maria2 to Mary.

>>> from whatstk.whatsapp.objects import WhatsAppChat
>>> from whatstk.data import whatsapp_urls
>>> chat = WhatsAppChat.from_source(filepath=whatsapp_urls.LOREM2)
>>> chat.users
['+1 123 456 789', 'Giuseppe', 'John', 'Maria', 'Maria2']
>>> chat = chat.rename_users(mapping={'Mary': ['Maria', 'Maria2']})
>>> chat.users
['+1 123 456 789', 'Giuseppe', 'John', 'Mary']

property start_date¶

Chat starting date.

Returns:	datetime

to_csv(filepath)¶

Save chat as csv.

Parameters:	filepath (str) – Name of file.

to_txt(filepath, hformat=None)[source]¶

Export chat to a text file.

Usefull to export the chat to different formats (i.e. using different hformats).

Parameters:	filepath (str) – Name of the file to export (must be a local path). hformat (str, optional) – Header format. Defaults to ‘%y-%m-%d, %H:%M - %name:’.

property users¶

List with users.

Returns:	list

whatstk.whatsapp.parser¶

Parser utils.

Functions

`df_from_txt_whatsapp`(filepath[, …])	Load chat as a DataFrame.
`generate_regex`(hformat)	Generate regular expression from hformat.

whatstk.whatsapp.parser.df_from_txt_whatsapp(filepath, auto_header=True, hformat=None, encoding='utf-8')[source]¶

Load chat as a DataFrame.

Parameters:

filepath (str) – Path to the file. It can be a local file (e.g. ‘path/to/file.txt’) or an URL to a hosted file (e.g. ‘http://www.url.to/file.txt’)
auto_header (bool, optional) – Detect header automatically. If False, hformat is required.
hformat (str, optional) –
Format of the header, e.g. '[%y-%m-%d %H:%M:%S] - %name:'. Use following keywords:
- '%y': for year ('%Y' is equivalent).
- '%m': for month.
- '%d': for day.
- '%H': for 24h-hour.
- '%I': for 12h-hour.
- '%M': for minutes.
- '%S': for seconds.
- '%P': for “PM”/”AM” or “p.m.”/”a.m.” characters.
- '%name': for the username.
Example 1: For the header ‘12/08/2016, 16:20 - username:’ we have the 'hformat='%d/%m/%y, %H:%M - %name:'.

Example 2: For the header ‘2016-08-12, 4:20 PM - username:’ we have hformat='%y-%m-%d, %I:%M %P - %name:'.
encoding (str, optional) –
Encoding to use for UTF when reading/writing (ex. ‘utf-8’). List of Python standard encodings.

Returns:

WhatsAppChat – Class instance with loaded and parsed chat.

See also

WhatsAppChat.from_source
extract_header_from_text

whatstk.whatsapp.parser.generate_regex(hformat)[source]¶

Generate regular expression from hformat.

Parameters:	hformat (str) – Simplified syntax for the header, e.g. `'%y-%m-%d, %H:%M:%S - %name:'`.
Returns:	str – Regular expression corresponding to the specified syntax.

Example

Generate regular expression corresponding to 'hformat=%y-%m-%d, %H:%M:%S - %name:'.

>>> from whatstk.whatsapp.parser import generate_regex
>>> generate_regex('%y-%m-%d, %H:%M:%S - %name:')
('(?P<year>\\d{2,4})-(?P<month>\\d{1,2})-(?P<day>\\d{1,2}), (?P<hour>\\d{1,2}):(?P<minutes>\\d{2}):(?
P<seconds>\\d{2}) - (?P<username>[^:]*): ', '(?P<year>\\d{2,4})-(?P<month>\\d{1,2})-(?P<day>\\d{1,2}), (?
P<hour>\\d{1,2}):(?P<minutes>\\d{2}):(?P<seconds>\\d{2}) - ')

whatstk.whatsapp.auto_header¶

Detect header from chat.

Functions

extract_header_from_text(text[, encoding]) Extract header from text.

whatstk.whatsapp.auto_header.extract_header_from_text(text, encoding='utf-8')[source]¶

Extract header from text.

Parameters:	text (str) – Loaded chat as string (whole text). encoding (str) – Encoding to use for UTF when reading/writing (ex. ‘utf-8’). List of Python standard encodings.
Returns:	str – Format extracted. None if no header was extracted.

Example

Load a chat using two text files. In this example, we use sample chats (available online, see urls in source code whatstk.data).

>>> from whatstk.whatsapp.parser import extract_header_from_text
>>> from urllib.request import urlopen
>>> from whatstk.data import whatsapp_urls
>>> filepath_1 = whatsapp_urls.POKEMON
>>> with urlopen(filepath_1) as f:
...     text = f.read().decode('utf-8')
>>> extract_header_from_text(text)
'%d.%m.%y, %H:%M - %name:

whatstk.whatsapp.generation¶

Automatic generation of chat using Lorem Ipsum text and time series statistics.

Classes

ChatGenerator(size[, users, seed]) Generate a chat.

Functions

generate_chats_hformats(output_path[, size, …]) Generate a chat and export using given header format.

class whatstk.whatsapp.generation.ChatGenerator(size, users=None, seed=100)[source]¶

Bases: object

Generate a chat.

Parameters:	size (int) – Number of messages to generate. users (list, optional) – List with names of the users. Defaults to module variable USERS. seed (int, optional) – Seed for random processes. Defaults to 100.

Methods

generate([filepath, hformat, last_timestamp]) Generate random chat as WhatsAppChat.

Examples

This simple example loads a chat using WhatsAppChat. Once loaded, we can access its attribute df, which contains the loaded chat as a DataFrame.

>>> from whatstk.whatsapp.generation import ChatGenerator
>>> from datetime import datetime
>>> from whatstk.data import whatsapp_urls
>>> chat = ChatGenerator(size=10).generate(last_timestamp=datetime(2020, 1, 1, 0, 0))
>>> chat.df.head(5)
                                  username                                            message
date
2019-12-31 09:43:04.000525            John         Quis labore laboris proident et deserunt.
2019-12-31 10:19:21.980039  +1 123 456 789               Non ullamco esse nulla voluptate. 🇩🇰
2019-12-31 13:56:45.575426            John  Duis non ut officia, enim enim qui cupidatat a...
2019-12-31 15:47:29.995420        Giuseppe              Non ut nulla laboris nostrud aute. 🏊🏻
2019-12-31 16:23:00.348542            John                     Tempor irure in velit tempor.

generate(filepath=None, hformat=None, last_timestamp=None)[source]¶

Generate random chat as WhatsAppChat.

Parameters:	filepath (str) – If given, generated chat is saved with name `filepath` (must be a local path). hformat (str, optional) – Format of the header, e.g. `'[%y-%m-%d %H:%M:%S] - %name:'`. last_timestamp (datetime, optional) – Datetime of last message. If None, defaults to current date.
Returns:	WhatsAppChat – Chat with random messages.

See also

WhatsAppChat.to_txt

whatstk.whatsapp.generation.generate_chats_hformats(output_path, size=2000, hformats=None, filepaths=None, last_timestamp=None, seed=100, verbose=False)[source]¶

Generate a chat and export using given header format.

If no hformat specified, chat is generated & exported using all supported header formats.

Parameters:

output_path (str) – Path to directory to export all generated chats as txt.
size (int, optional) – Number of messages of the chat. Defaults to 2000.
hformats (list, optional) – List of header formats to use when exporting chat. If None, defaults to all supported header formats.
filepaths (list, optional) – List with filepaths. If None, defaults to hformat.replace(‘ ‘, ‘_’).replace(‘/’, ‘').
last_timestamp (datetime, optional) – Datetime of last message. If None, defaults to current date.
seed (int, optional) – Seed for random processes. Defaults to 100.
verbose (bool) – Set to True to print runtime messages.

See also

ChatGenerator
ChatGenerator.generate

whatstk.whatsapp.hformat¶

Header format utils.

Example: Check if header is available.

>>> from whatstk.utils.hformat import is_supported
>>> is_supported('%y-%m-%d, %H:%M:%S - %name:')
(True, True)

Functions

`get_supported_hformats_as_dict`()	Get dictionary with supported formats and relevant info.
`get_supported_hformats_as_list`()	Get list of supported formats.
`is_supported`(hformat)	Check if header hformat is currently supported.
`is_supported_verbose`(hformat)	Check if header hformat is currently supported (both manually and using auto_header).

whatstk.whatsapp.hformat.get_supported_hformats_as_dict()[source]¶

Get dictionary with supported formats and relevant info.

Returns:	dict – Dict with two elements: `format`: Header format. All formats appearing are supported. `auto_header`: 1 if auto_header is supported), 0 otherwise.

whatstk.whatsapp.hformat.get_supported_hformats_as_list()[source]¶

Get list of supported formats.

Returns:	list – List with supported formats (as str).

whatstk.whatsapp.hformat.is_supported(hformat)[source]¶

Check if header hformat is currently supported.

Parameters:	hformat (str) – Header format.
Returns:	tuple – * bool: True if header is supported. * bool: True if header is supported with auto_header feature.

whatstk.whatsapp.hformat.is_supported_verbose(hformat)[source]¶

Check if header hformat is currently supported (both manually and using auto_header).

Result is shown as a string.

Parameters:	hformat (str) – Information message.

Example

Check if format '%y-%m-%d, %H:%M - %name:' is supported.

>>> from whatstk.whatsapp.hformat import is_supported_verbose
>>> is_supported_verbose('%y-%m-%d, %H:%M - %name:')
"The header '%y-%m-%d, %H:%M - %name:' is supported. `auto_header` for this header is supported."