Časové razítko epocha
Příklady kódu
N
Epoch timestamp is a unit of measurement for time. It is the number of
seconds elapsed since the countdown has started.
Beginning epochs per system:
macOS - January 1, 1904
Windows - January 1, 1601
Unix - January 1, 1970N
from datetime import datetime
timestamp = 1545730073
dt_object = datetime.fromtimestamp(timestamp)
print("dt_object =", dt_object)
print("type(dt_object) =", type(dt_object))
N
# Unix-time to
df.Timestamp = pd.to_datetime(df.Timestamp, unit='s')
# Resampling to daily frequency
df.index = df.Timestamp
df = df.resample('D').mean()
# Resampling to monthly frequency
df_month = df.resample('M').mean()
# Resampling to annual frequency
df_year = df.resample('A-DEC').mean()
# Resampling to quarterly frequency
df_Q = df.resample('Q-DEC').mean()N
from datetime import datetime
# current date and time
now = datetime.now()
timestamp = datetime.timestamp(now)
print("timestamp =", timestamp)
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