dccd 0.1

Download Crypto Currenciy Data from different exchanges.

# Download_Crypto_Currencies_Data
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## This is a python package to *download* and *upload* data about *crypto-currencies* (bitcoin, ether, litecoin, etc.) from different API exchanges (allow only Binance, GDAX, Kraken and Poloniex for the moment).

The **'dccd'** package contain the module **'dl_cc_data'** with 5 classes to download and update data for each exchange, and a module **'timetools'** to manage specific time functions needed for each API.

The four classes to download data are **FromBinance**, **FromGDAX**, **FromKraken** and **FromPoloniex**. All have the same methods and almost the same parameters:
- **\_\_init\_\_(path, crypto, span, fiat(optional), form(optional))** initialisation with **path** is the path where save the data (string), **crypto** is a crypto currency (string) and **span** is the interval time between each observation in seconds (integer) or can be a string as 'hourly', 'daily', etc. (see details on the doc string). The optional parameters are **fiat** the second currency (default is 'USD' and 'USDT' for poloniex and binance) and **form** the format to save the data (default is 'xlsx').

- **import\_data(start, end)** download data with **start** and **end** the timestamp (integer) or the date and time (string as 'yyyy-mm-dd hh:mm:ss'), respectively of the first observation and the last observation (default are special parameters **start='last'** allow the last data saved and **end='now'** allow the last observation available). Exclusion: Kraken don't allow the **end** parameter and provide only the thousand last observations.

- **save(form(optional), by(optional))** save the data with **form** the format of the saved data (default is 'xlsx') and **by** is the "size" of each saved file (default is 'Y' as an entire year). Exclusion: This optional parameters are in progress, let the default parameter for the moment, other are not allow.

- **show()** print the data frame without any parameter.

Method chaining is available.

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*Package not achieved, always in progress. All advice is welcome.*