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POHow to pull specific information from an output in Python
 

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  1. POHow to pull specific information from an output in Python
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    <p>So I have a code that gives an output, and what I need to do is pull the information out in between the commas, assign them to a variable that changes dynamically when called... here is my code:</p> <pre><code>import re data_directory = 'Z:/Blender_Roto/' data_file = 'diving_board.shape4ae' fullpath = data_directory + data_file print("====init=====") file = open(fullpath) for line in file: current_line = line # massive room for optimized code here. # this assumes the last element of the line containing the words # "Units Per Second" is the number we are looking for. # this is a non float number, generally. if current_line.find("Units Per Second") != -1: fps = line_split = float(current_line.split()[-1]) print("Frames Per Second:", fps) # source dimensions if current_line.find("Source Width") != -1: source_width = line_split = int(current_line.split()[-1]) print("Source Width:", source_width) if current_line.find("Source Height") != -1: source_height = line_split = int(current_line.split()[-1]) print("Source Height:", source_height) # aspect ratios if current_line.find("Source Pixel Aspect Ratio") != -1: source_px_aspect = line_split = int(current_line.split()[-1]) print("Source Pixel Aspect Ratio:", source_px_aspect) if current_line.find("Comp Pixel Aspect Ratio") != -1: comp_aspect = line_split = int(current_line.split()[-1]) print("Comp Pixel Aspect Ratio:", comp_aspect) # assumption, ae file can contain multiple mocha shapes. # without knowing the exact format i will limit the script # to deal with one mocha shape being animated N frames. # this gathers the shape details, and frame number but does not # include error checking yet. if current_line.find("XSpline") != -1: # record the frame number. frame = re.search("\s*(\d*)\s*XSpline", current_line) if frame.group(1) != None: frame = frame.group(1) print("frame:", frame) # pick part the part of the line that deals with geometry match = re.search("XSpline\((.+)\)\n", current_line) line_to_strip = match.group(1) points = re.findall('(\(.*?\))', line_to_strip) print(len(points)) for point in points: print(point) print("="*40) file.close() </code></pre> <p>This gives me the output:</p> <pre><code>====init===== Frames Per Second: 24.0 Source Width: 2048 Source Height: 778 Source Pixel Aspect Ratio: 1 Comp Pixel Aspect Ratio: 1 frame: 20 5 (0.793803,0.136326,0,0.5,0) (0.772345,0.642332,0,0.5,0) (0.6436,0.597615,0,0.5,0) (0.70082,0.143387,0,0.5,0.25) (0.70082,0.112791,0,0.5,0) ======================================== </code></pre> <p>So what I need for example is to be able to assign (0.793803, 0.136326, 0, 0.5, 0) to (1x,1y,1z,1w,1s), (0.772345,0.642332,0,0.5,0) to (2x, 2y, 2z, 2w, 2s) etc so that no matter what numbers are filling those positions they will take on that value.</p> <p>here is the code I need to put those numbers into:</p> <pre><code>#------------------------------------------------------------------------------- # Name: Mocha Rotoscoping Via Blender # Purpose: Make rotoscoping more efficient # # Author: Jeff Owens # # Created: 11/07/2011 # Copyright: (c) jeff.owens 2011 # Licence: Grasshorse #------------------------------------------------------------------------------- #!/usr/bin/env python import sys import os import parser sys.path.append('Z:\_protomotion\Prog\HelperScripts') import GetDir sys.path.append('Z:\_tutorials\01\tut01_001\prod\Blender_Test') filename = 'diving_board.shape4ae' infile = 'Z:\_tutorials\01\tut01_001\prod\Blender_Test' import bpy from mathutils import Vector #below are taken from mocha export x_width =2048 y_height = 778 z_depth = 0 frame = 20 def readText(): text_file = open('diving_board.shape4ae', 'r') lines = text_file.readlines() print (lines) print (len.lines) for line in lines: print (line) ##sets points final x,y,z value taken from mocha export for blender interface point1x = (0.642706 * x_width) point1y = (0.597615 * y_height) point1z = (0 * z_depth) point2x = (0.770557 * x_width) point2y = (0.647039 * y_height) point2z = (0 * z_depth) point3x = (0.794697 * x_width) point3y = (0.0869024 * y_height) point3z = (0 * z_depth) point4x = (0.707973* x_width) point4y = (0.0751348 * y_height) point4z = (0 * z_depth) w = 1 # weight listOfVectors = [Vector((point1x,point1y,point1z)),Vector((point2x,point2y,point2z)),Vector((point3x,point3 y,point3z)),Vector((point4x,point4y,point4z)), Vector((point1x,point1y,point1z))] def MakePolyLine(objname, curvename, cList): curvedata = bpy.data.curves.new(name=curvename, type='CURVE') curvedata.dimensions = '3D' objectdata = bpy.data.objects.new(objname, curvedata) objectdata.location = (0,0,0) #object origin bpy.context.scene.objects.link(objectdata) polyline = curvedata.splines.new('POLY') polyline.points.add(len(cList)-1) for num in range(len(cList)): x, y, z = cList[num] polyline.points[num].co = (x, y, z, w) MakePolyLine("NameOfMyCurveObject", "NameOfMyCurve", listOfVectors) </code></pre> <p>So where I have my vector I would like to be able to place (p.x, p.y,0.z,p.w,p.s) then (p2.x,p2.y,p2.zp2.wp2.s) etc so that it can change per the number given</p> <p>Any help will be great.. thank you in advance!</p> <p>-jeff</p>
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    1. COParsing text in Python is actually quite easy, but you'll have to come up with a method on your own. From the top of my head I would attack this problem with splitting the string up on newlines (using [str.split](http://docs.python.org/library/stdtypes.html#str.split)), then parsing each line individually using a combination str.split and simple inspection. As long as the text doesn't change in format, you can write your parser for this specific case.
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