GeneratePythonScript v1

../_images/GeneratePythonScript-v1_dlg.png

GeneratePythonScript dialog.

Summary

An Algorithm to generate a Python script file to reproduce the history of a workspace.

Properties

Name Direction Type Default Description
InputWorkspace Input Workspace Mandatory An input workspace.
Filename Input string   The name of the file into which the workspace history will be generated. Allowed extensions: [‘.py’]
ScriptText Output string   Saves the history of the workspace to a variable.
UnrollAll Input boolean False Unroll all algorithms to show just their child algorithms.
StartTimestamp Input string   The filter start time in the format YYYY-MM-DD HH:mm:ss
EndTimestamp Input string   The filter end time in the format YYYY-MM-DD HH:mm:ss
SpecifyAlgorithmVersions Input string Specify Old When to specify which algorithm version was used by Mantid. Allowed values: [‘Specify Old’, ‘Specify All’, ‘Specify None’]

Description

Retrieves the algorithm history of the workspace and saves it to a Python script file or Python variable.

A time range can be specified which will restrict the algorithms in the scrit to those which were executed between the given times, if no end time was specified then algorithms from the start time up to the current time will be included in the generated script.

Start and end times are given in ISO8601 format: YYYY-MM-DD HH:mm:ss, for example 3:25 PM on July the 4th 2014 would be 2014-07-04 15:25:00.

Usage

Example - generate a python script for a workspace:

#create a workspace and run some operations on it
ws = CreateSampleWorkspace()
ws = CropWorkspace(ws, XMin=7828.162291, XMax=11980.906921)
ws = Power(ws, Exponent=1.5)
ws = RenameWorkspace(ws, OutputWorkspace="MyTestWorkspace")

script_text = GeneratePythonScript(ws)
print script_text.strip()

Output:

######################################################################
#Python Script Generated by GeneratePythonScript Algorithm
######################################################################
CreateSampleWorkspace(OutputWorkspace='ws')
CropWorkspace(InputWorkspace='ws', OutputWorkspace='ws', XMin=7828.1622909999996, XMax=11980.906921)
Power(InputWorkspace='ws', OutputWorkspace='ws', Exponent=1.5)
RenameWorkspace(InputWorkspace='ws', OutputWorkspace='MyTestWorkspace')

Example - generate a python script giving a range of start times:

import time

# Do some operations on the workspace with a pause between them
ws = CreateSampleWorkspace()
ws = CropWorkspace(ws, XMin=7828.162291, XMax=11980.906921)
time.sleep(2)
ws = Power(ws, Exponent=1.5)
ws = RenameWorkspace(ws, OutputWorkspace="MyTestWorkspace")

# Get the execution time of the last algorithm and subtract 1 second
history = mtd['MyTestWorkspace'].getHistory()
last = history.getAlgorithmHistory(history.size() - 1)
from_time = last.executionDate() - int(1e9)

# Generate a script with a given start time
script_text = GeneratePythonScript(ws, StartTimestamp=str(from_time))
print script_text.strip()

Output:

######################################################################
#Python Script Generated by GeneratePythonScript Algorithm
######################################################################
Power(InputWorkspace='ws', OutputWorkspace='ws', Exponent=1.5)
RenameWorkspace(InputWorkspace='ws', OutputWorkspace='MyTestWorkspace')

Example - generate a python script and save it to file:

import os

#create a workspace and run some operations on it
ws = CreateSampleWorkspace()
ws = CropWorkspace(ws, XMin=7828.162291, XMax=11980.906921)
ws = Power(ws, Exponent=1.5)
ws = RenameWorkspace(ws, OutputWorkspace="MyTestWorkspace")

path = os.path.join(os.path.expanduser("~"), 'myscript.py')
GeneratePythonScript(ws, Filename=path)

with open (path, 'r') as script:
  print script.read().strip()

Output:

######################################################################
#Python Script Generated by GeneratePythonScript Algorithm
######################################################################
CreateSampleWorkspace(OutputWorkspace='ws')
CropWorkspace(InputWorkspace='ws', OutputWorkspace='ws', XMin=7828.1622909999996, XMax=11980.906921)
Power(InputWorkspace='ws', OutputWorkspace='ws', Exponent=1.5)
RenameWorkspace(InputWorkspace='ws', OutputWorkspace='MyTestWorkspace')

Categories: Algorithms | Utility | Development