Puoi trovarlo chiamato Offset Aliases :
Viene assegnato un certo numero di alias di stringa a utili frequenze di serie temporali comuni. Faremo riferimento a questi alias come alias offset.
Alias Description
B business day frequency
C custom business day frequency
D calendar day frequency
W weekly frequency
M month end frequency
SM semi-month end frequency (15th and end of month)
BM business month end frequency
CBM custom business month end frequency
MS month start frequency
SMS semi-month start frequency (1st and 15th)
BMS business month start frequency
CBMS custom business month start frequency
Q quarter end frequency
BQ business quarter end frequency
QS quarter start frequency
BQS business quarter start frequency
A, Y year end frequency
BA, BY business year end frequency
AS, YS year start frequency
BAS, BYS business year start frequency
BH business hour frequency
H hourly frequency
T, min minutely frequency
S secondly frequency
L, ms milliseconds
U, us microseconds
N nanoseconds
freq
specificatori, mentre Period.strftime () afferma di restituire " la rappresentazione di stringa del Periodo ", che apparentemente è qualcos'altro , come ad esempioM
em
per minuto e mese in realtà creano lo stesso oggetto difreq='M'
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