Created
July 4, 2019 15:11
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Importar archivos .hst de Metatrader en Python
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def read_hst(filename): | |
from pandas import DataFrame, to_datetime | |
from struct import unpack, calcsize, iter_unpack | |
bint = open(filename, 'rb').read() | |
head = unpack('<i64s12siiii', bint[:96]) | |
version = head[0] | |
symbol = head[2].decode("utf-8").split('\x00')[0] | |
start = 148 | |
if version == 401: | |
fmt = '<qddddqfq' | |
columns = ['datetime', 'open', 'high', 'low', | |
'close', 'volume', 'spread', 'real_volume'] | |
elif version == 400: | |
fmt = '<iddddd' | |
columns = ['datetime', 'open', 'high', 'low', 'close', 'volume'] | |
else: | |
print('El archivo no es una versión conocida de hst de MetaTrader') | |
return | |
size = calcsize(fmt) | |
df = DataFrame.from_records([bar for bar in iter_unpack(fmt, bint[start:])], | |
columns=columns, | |
index='datetime') | |
df.name = symbol | |
df.index = to_datetime(df.index, unit='s') | |
return df |
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La función debe incluirse en un Jupyter notebook o bien en el código de un script de Python 3.X.
Para usarlo pasar a la función el nombre (ruta) del fichero .hst, por ejemplo:
df = read_hst('NZDUSD1440.hst')
y la variable df recibirá un dataframe de Pandas.