Python reads a column of data from the csv file and defines two pattern, to determine the change interval.

Python reads a column of data from the csv file and defines two pattern, [- 1,1,1] and [1,-1,-1] to determine different change intervals

.

grab stock data and determine the range of changes in the stock.

Date 3D10
2017-9-121
2017-9-131
2017-9-141
2017-9-151
2017-9-161
2017-9-191
2017-9-201
2017-9-21 1
2017-9-21 1
2017-9-23 1
2017-9-26 1
2017-9-27 1
2017-9-28-28 1
2017-10-7 1
2017-10-11 1
2017-10-11 1
2017-10-121
2017-10-131
2017-10-141
2017-10-17 1
2017-10-18 1
2017-10-19 1
2017-10-201
2017-10-21 1
2017-10-24 1
2017-10-25 1
1
2017-11-41
2017-11-7 1
2017-11-8 1
2017-11-9 1
2017-11-101
2017-11-11-11
2017-11-14-1
2017-11-15-1
2017-11-16-1
2017-11-17-1
2017-11-18-1
2017-11-21-1
2017-1 1
2017-12-11
2017-12-21
2017-12-51
2017-12-61
2017-12-71
2017-12-8 1
2017-12-9 1
2017-12-121
2017-12-131
2017-12-141
2017-12-151
2017-12-16 1
2017-12-19 1
1
2017-12-301
2018-1-31
2018-1-41
2018-1-51
2018-1-61
2018-1-9 1
2018-1-101
2018-1-11 1
2018-1-121
2018-1-131
2018-1-17 1
2018-1-18 1
2018-1-19 1 < br 1
2018-1-31 1
2018-2-1-1
2018-2-2-1
2018-2-3-1
2018-2-6-1
2018-2-7-1
2018-2-8-1
2018-2-9-1
2018-2-10-1
2018-2-13-1
2018-2-14-1 2-23 1
2018-2-24 1
2018-2-27 1
2018-2-28 1
2018-3-1
2018-3-2-1
2018-3-3-1
2018-3-6-1
2018-3-7-1
2018-3-8-1
2018-3-9-1
2018-3-10 1
2018-3-13 1 < br 20-1
2018-3-21-1
2018-3-22-1
2018-3-23-1
2018-3-24-1
2018-3-27-1
2018-3-28-1
2018-3-29-1
2018-3-30-1
2018-4-3-1
2018-4-4-1
2018-4-5-1
2018-4-4-1 121
2018-4-131
2018-4-141
2018-4-17 1
2018-4-18 1
2018-4-19 1
2018-4-201
2018-4-21 1
2018-4-24 1
2018-4-25-1
2018-4-26-1
2018-4-27-1
2018-4-28-1
2018-5-5 -1
2018-5-8 1
2018-5-9 1
2018-5-101
2018-5-11 1
2018-5-121
2018-5-151
2018-5-161
2018-5-171
2018-5-18 1
2018-5-19 1
2018-5-221
2018-5-23 1
2018-5-24 1 < 2-1
2018-6-5-1
2018-6-61
2018-6-7 1
2018-6-8 1
2018-6-9 1
2018-6-121
2018-6-131
2018-6-141
2018-6-151
2018-6-161
2018-6-19-1
2018-6-20-1
2018-6 -1
2018-6-29-1
2018-6-30-1
2018-7-3-1
2018-7-4-1
2018-7-6-1
2018-7-7-1
2018-7-101
2018-7-11 1
2018-7-121
2018-7-131
2018-7-141
2018-7-17 1
2018-

clipboard.png

::

clipboard.png

Python
Apr.01,2021

I have a method, but I think it's a little complicated. There should be other simple ways. Take a look at it for a moment: 

import pandas as pd
from io import StringIO 

s = """
Date 3D10
2017-9-12 1
2017-9-13 1
2017-9-14 1
2017-9-15 1
2017-9-16 1
2017-9-19 1
2017-9-20 1
2017-9-21 1
2017-9-22 1
2017-9-23 1
2017-9-26 1
...
2018-7-18 1
2018-7-19 1
2018-7-20 1
"""

df = pd.read_csv(StringIO(s), sep=" ")

df["3D10_shift_1"] = df["3D10"].shift(1)
df["3D10_shift_2"] = df["3D10"].shift(2)
df["m"] = list(zip(df["3D10"], df["3D10_shift_1"], df["3D10_shift_2"]))
df["Date"] = pd.to_datetime(df.Date, format='%Y-%m-%d')

-sharp pattern
res1 = [(d, d+pd.Timedelta(days=1), d+pd.Timedelta(days=2)) for d in df[df.m==(-1,1.0,1.0)].Date.dt.date]

-sharp pattern
res2 = [(d, d+pd.Timedelta(days=1), d+pd.Timedelta(days=2)) for d in df[df.m==(1,-1.0,-1.0)].Date.dt.date]

Previous: How to count documents after pymongo aggregate query?

Next: Tcp repeat confirmation

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b36956-2c020.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b36956-2c020.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?