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How to insert a code for reset timer for each trial?

OS: Win10
PsychoPy version: PsychoPy 3.2.3
Standard Standalone? (y/n): y

Hi everyone. I am currently trying to implement a task in which the subject is asked to estimate the duration of a target stimulus through the use of the space key: a first time to make the stimulus appear and a second one to “block” it, depending on the duration of the stimulus target seen just before. The problem is that for every trial I would like the timer to be reset, so that the correct time between the first use of the space key and the second (the time estimate of the target stimulus) is displayed directly in the data file. I am attaching the code. How can I do it? Thank you.

from __future__ import absolute_import, division

from psychopy import locale_setup
from psychopy import prefs
from psychopy import sound, gui, visual, core, data, event, logging, clock
from psychopy.constants import (NOT_STARTED, STARTED, PLAYING, PAUSED,
                                STOPPED, FINISHED, PRESSED, RELEASED, FOREVER)

import numpy as np  # whole numpy lib is available, prepend 'np.'
from numpy import (sin, cos, tan, log, log10, pi, average,
                   sqrt, std, deg2rad, rad2deg, linspace, asarray)
from numpy.random import random, randint, normal, shuffle
import os  # handy system and path functions
import sys  # to get file system encoding

from psychopy.hardware import keyboard

# Ensure that relative paths start from the same directory as this script
_thisDir = os.path.dirname(os.path.abspath(__file__))
os.chdir(_thisDir)

# Store info about the experiment session
psychopyVersion = '3.2.3'
expName = 'Prova_psycho1'  # from the Builder filename that created this script
expInfo = {'participant': '', 'session': '001'}
dlg = gui.DlgFromDict(dictionary=expInfo, sortKeys=False, title=expName)
if dlg.OK == False:
    core.quit()  # user pressed cancel
expInfo['date'] = data.getDateStr()  # add a simple timestamp
expInfo['expName'] = expName
expInfo['psychopyVersion'] = psychopyVersion

# Data file name stem = absolute path + name; later add .psyexp, .csv, .log, etc
filename = _thisDir + os.sep + u'data/%s_%s_%s' % (expInfo['participant'], expName, expInfo['date'])

# An ExperimentHandler isn't essential but helps with data saving
thisExp = data.ExperimentHandler(name=expName, version='',
    extraInfo=expInfo, runtimeInfo=None,
    originPath='C:\\Users\\Nadia\\Desktop\\Psychopy_task\\Prova_psycho1.py',
    savePickle=True, saveWideText=True,
    dataFileName=filename)
# save a log file for detail verbose info
logFile = logging.LogFile(filename+'.log', level=logging.EXP)
logging.console.setLevel(logging.WARNING)  # this outputs to the screen, not a file

endExpNow = False  # flag for 'escape' or other condition => quit the exp
frameTolerance = 0.001  # how close to onset before 'same' frame

# Start Code - component code to be run before the window creation

# Setup the Window
win = visual.Window(
    size=(1024, 768), fullscr=True, screen=0, 
    winType='pyglet', allowGUI=False, allowStencil=False,
    monitor='testMonitor', color=[0,0,0], colorSpace='rgb',
    blendMode='avg', useFBO=True, 
    units='height')
# store frame rate of monitor if we can measure it
expInfo['frameRate'] = win.getActualFrameRate()
if expInfo['frameRate'] != None:
    frameDur = 1.0 / round(expInfo['frameRate'])
else:
    frameDur = 1.0 / 60.0  # could not measure, so guess

# create a default keyboard (e.g. to check for escape)
defaultKeyboard = keyboard.Keyboard()

# Initialize components for Routine "instr1"
instr1Clock = core.Clock()
text = visual.TextStim(win=win, name='text',
    text='In questo compito di riproduzione temporale le verrà chiesto di osservare la durata dello stimolo target (cerchio bianco) e di cercare di riprodurlo in seguito. Le chiediamo di premere una prima volta il tasto "spazio" per far apparire lo stimolo e di premerlo una seconda volta quando pensa che la durata temporale dello stimolo sia uguale al cerchio bianco visto in precedenza.\n\nQuando è pronto, prema "spazio".',
    font='Arial',
    pos=(0, 0), height=0.05, wrapWidth=None, ori=0, 
    color='white', colorSpace='rgb', opacity=1, 
    languageStyle='LTR',
    depth=0.0);
ready = keyboard.Keyboard()

# Initialize components for Routine "trial"
trialClock = core.Clock()
polygon = visual.ShapeStim(
    win=win, name='polygon', vertices='cross',
    size=(0.01, 0.01),
    ori=0, pos=(0, 0),
    lineWidth=1, lineColor=[1,1,1], lineColorSpace='rgb',
    fillColor=[1,1,1], fillColorSpace='rgb',
    opacity=1, depth=0.0, interpolate=True)
polygon_2 = visual.Polygon(
    win=win, name='polygon_2',
    edges=90, size=(0.1, 0.1),
    ori=0, pos=(0, 0),
    lineWidth=1, lineColor=[1,1,1], lineColorSpace='rgb',
    fillColor=[1,1,1], fillColorSpace='rgb',
    opacity=1, depth=-1.0, interpolate=True)
key_resp = keyboard.Keyboard()

# Initialize components for Routine "response"
responseClock = core.Clock()
polygon_3 = visual.Polygon(
    win=win, name='polygon_3',
    edges=90, size=(0.1, 0.1),
    ori=0, pos=(0, 0),
    lineWidth=1, lineColor=[1,1,1], lineColorSpace='rgb',
    fillColor=[-1,1,-1], fillColorSpace='rgb',
    opacity=1, depth=0.0, interpolate=True)
key_resp_2 = keyboard.Keyboard()

# Initialize components for Routine "thanks"
thanksClock = core.Clock()
text_2 = visual.TextStim(win=win, name='text_2',
    text='Grazie per aver partecipato!',
    font='Arial',
    pos=(0, 0), height=0.1, wrapWidth=None, ori=0, 
    color='white', colorSpace='rgb', opacity=1, 
    languageStyle='LTR',
    depth=0.0);

# Create some handy timers
globalClock = core.Clock()  # to track the time since experiment started
routineTimer = core.CountdownTimer()  # to track time remaining of each (non-slip) routine 

# ------Prepare to start Routine "instr1"-------
# update component parameters for each repeat
ready.keys = []
ready.rt = []
# keep track of which components have finished
instr1Components = [text, ready]
for thisComponent in instr1Components:
    thisComponent.tStart = None
    thisComponent.tStop = None
    thisComponent.tStartRefresh = None
    thisComponent.tStopRefresh = None
    if hasattr(thisComponent, 'status'):
        thisComponent.status = NOT_STARTED
# reset timers
t = 0
_timeToFirstFrame = win.getFutureFlipTime(clock="now")
instr1Clock.reset(-_timeToFirstFrame)  # t0 is time of first possible flip
frameN = -1
continueRoutine = True

# -------Run Routine "instr1"-------
while continueRoutine:
    # get current time
    t = instr1Clock.getTime()
    tThisFlip = win.getFutureFlipTime(clock=instr1Clock)
    tThisFlipGlobal = win.getFutureFlipTime(clock=None)
    frameN = frameN + 1  # number of completed frames (so 0 is the first frame)
    # update/draw components on each frame
    
    # *text* updates
    if text.status == NOT_STARTED and tThisFlip >= 0.0-frameTolerance:
        # keep track of start time/frame for later
        text.frameNStart = frameN  # exact frame index
        text.tStart = t  # local t and not account for scr refresh
        text.tStartRefresh = tThisFlipGlobal  # on global time
        win.timeOnFlip(text, 'tStartRefresh')  # time at next scr refresh
        text.setAutoDraw(True)
    
    # *ready* updates
    waitOnFlip = False
    if ready.status == NOT_STARTED and tThisFlip >= 0.0-frameTolerance:
        # keep track of start time/frame for later
        ready.frameNStart = frameN  # exact frame index
        ready.tStart = t  # local t and not account for scr refresh
        ready.tStartRefresh = tThisFlipGlobal  # on global time
        win.timeOnFlip(ready, 'tStartRefresh')  # time at next scr refresh
        ready.status = STARTED
        # keyboard checking is just starting
    if ready.status == STARTED and not waitOnFlip:
        theseKeys = ready.getKeys(keyList=['space'], waitRelease=False)
        if len(theseKeys):
            theseKeys = theseKeys[0]  # at least one key was pressed
            
            # check for quit:
            if "escape" == theseKeys:
                endExpNow = True
            # a response ends the routine
            continueRoutine = False
    
    # check for quit (typically the Esc key)
    if endExpNow or defaultKeyboard.getKeys(keyList=["escape"]):
        core.quit()
    
    # check if all components have finished
    if not continueRoutine:  # a component has requested a forced-end of Routine
        break
    continueRoutine = False  # will revert to True if at least one component still running
    for thisComponent in instr1Components:
        if hasattr(thisComponent, "status") and thisComponent.status != FINISHED:
            continueRoutine = True
            break  # at least one component has not yet finished
    
    # refresh the screen
    if continueRoutine:  # don't flip if this routine is over or we'll get a blank screen
        win.flip()

# -------Ending Routine "instr1"-------
for thisComponent in instr1Components:
    if hasattr(thisComponent, "setAutoDraw"):
        thisComponent.setAutoDraw(False)
thisExp.addData('text.started', text.tStartRefresh)
thisExp.addData('text.stopped', text.tStopRefresh)
# the Routine "instr1" was not non-slip safe, so reset the non-slip timer
routineTimer.reset()

# set up handler to look after randomisation of conditions etc
trials = data.TrialHandler(nReps=2, method='fullRandom', 
    extraInfo=expInfo, originPath=-1,
    trialList=data.importConditions('..\\trialTypes.csv'),
    seed=None, name='trials')
thisExp.addLoop(trials)  # add the loop to the experiment
thisTrial = trials.trialList[0]  # so we can initialise stimuli with some values
# abbreviate parameter names if possible (e.g. rgb = thisTrial.rgb)
if thisTrial != None:
    for paramName in thisTrial:
        exec('{} = thisTrial[paramName]'.format(paramName))

for thisTrial in trials:
    currentLoop = trials
    # abbreviate parameter names if possible (e.g. rgb = thisTrial.rgb)
    if thisTrial != None:
        for paramName in thisTrial:
            exec('{} = thisTrial[paramName]'.format(paramName))
    
    # ------Prepare to start Routine "trial"-------
    # update component parameters for each repeat
    key_resp.keys = []
    key_resp.rt = []
    # keep track of which components have finished
    trialComponents = [polygon, polygon_2, key_resp]
    for thisComponent in trialComponents:
        thisComponent.tStart = None
        thisComponent.tStop = None
        thisComponent.tStartRefresh = None
        thisComponent.tStopRefresh = None
        if hasattr(thisComponent, 'status'):
            thisComponent.status = NOT_STARTED
    # reset timers
    t = 0
    _timeToFirstFrame = win.getFutureFlipTime(clock="now")
    trialClock.reset(-_timeToFirstFrame)  # t0 is time of first possible flip
    frameN = -1
    continueRoutine = True
    
    # -------Run Routine "trial"-------
    while continueRoutine:
        # get current time
        t = trialClock.getTime()
        tThisFlip = win.getFutureFlipTime(clock=trialClock)
        tThisFlipGlobal = win.getFutureFlipTime(clock=None)
        frameN = frameN + 1  # number of completed frames (so 0 is the first frame)
        # update/draw components on each frame
        
        # *polygon* updates
        if polygon.status == NOT_STARTED and tThisFlip >= 0.0-frameTolerance:
            # keep track of start time/frame for later
            polygon.frameNStart = frameN  # exact frame index
            polygon.tStart = t  # local t and not account for scr refresh
            polygon.tStartRefresh = tThisFlipGlobal  # on global time
            win.timeOnFlip(polygon, 'tStartRefresh')  # time at next scr refresh
            polygon.setAutoDraw(True)
        
        # *polygon_2* updates
        if polygon_2.status == NOT_STARTED and tThisFlip >= 1.0-frameTolerance:
            # keep track of start time/frame for later
            polygon_2.frameNStart = frameN  # exact frame index
            polygon_2.tStart = t  # local t and not account for scr refresh
            polygon_2.tStartRefresh = tThisFlipGlobal  # on global time
            win.timeOnFlip(polygon_2, 'tStartRefresh')  # time at next scr refresh
            polygon_2.setAutoDraw(True)
        if polygon_2.status == STARTED:
            # is it time to stop? (based on global clock, using actual start)
            if tThisFlipGlobal > polygon_2.tStartRefresh + fixation-frameTolerance:
                # keep track of stop time/frame for later
                polygon_2.tStop = t  # not accounting for scr refresh
                polygon_2.frameNStop = frameN  # exact frame index
                win.timeOnFlip(polygon_2, 'tStopRefresh')  # time at next scr refresh
                polygon_2.setAutoDraw(False)
        
        # *key_resp* updates
        waitOnFlip = False
        if key_resp.status == NOT_STARTED and tThisFlip >= 0.0-frameTolerance:
            # keep track of start time/frame for later
            key_resp.frameNStart = frameN  # exact frame index
            key_resp.tStart = t  # local t and not account for scr refresh
            key_resp.tStartRefresh = tThisFlipGlobal  # on global time
            win.timeOnFlip(key_resp, 'tStartRefresh')  # time at next scr refresh
            key_resp.status = STARTED
            # keyboard checking is just starting
            waitOnFlip = True
            win.callOnFlip(key_resp.clock.reset)  # t=0 on next screen flip
        if key_resp.status == STARTED and not waitOnFlip:
            theseKeys = key_resp.getKeys(keyList=['space'], waitRelease=False)
            if len(theseKeys):
                theseKeys = theseKeys[0]  # at least one key was pressed
                
                # check for quit:
                if "escape" == theseKeys:
                    endExpNow = True
                if key_resp.keys == []:  # then this was the first keypress
                    key_resp.keys = theseKeys.name  # just the first key pressed
                    key_resp.rt = theseKeys.rt
                    # a response ends the routine
                    continueRoutine = False
        
        # check for quit (typically the Esc key)
        if endExpNow or defaultKeyboard.getKeys(keyList=["escape"]):
            core.quit()
        
        # check if all components have finished
        if not continueRoutine:  # a component has requested a forced-end of Routine
            break
        continueRoutine = False  # will revert to True if at least one component still running
        for thisComponent in trialComponents:
            if hasattr(thisComponent, "status") and thisComponent.status != FINISHED:
                continueRoutine = True
                break  # at least one component has not yet finished
        
        # refresh the screen
        if continueRoutine:  # don't flip if this routine is over or we'll get a blank screen
            win.flip()
    
    # -------Ending Routine "trial"-------
    for thisComponent in trialComponents:
        if hasattr(thisComponent, "setAutoDraw"):
            thisComponent.setAutoDraw(False)
    trials.addData('polygon.started', polygon.tStartRefresh)
    trials.addData('polygon.stopped', polygon.tStopRefresh)
    trials.addData('polygon_2.started', polygon_2.tStartRefresh)
    trials.addData('polygon_2.stopped', polygon_2.tStopRefresh)
    # check responses
    if key_resp.keys in ['', [], None]:  # No response was made
        key_resp.keys = None
    trials.addData('key_resp.keys',key_resp.keys)
    if key_resp.keys != None:  # we had a response
        trials.addData('key_resp.rt', key_resp.rt)
    trials.addData('key_resp.started', key_resp.tStartRefresh)
    trials.addData('key_resp.stopped', key_resp.tStopRefresh)
    # the Routine "trial" was not non-slip safe, so reset the non-slip timer
    routineTimer.reset()
    
    # ------Prepare to start Routine "response"-------
    # update component parameters for each repeat
    key_resp_2.keys = []
    key_resp_2.rt = []
    # keep track of which components have finished
    responseComponents = [polygon_3, key_resp_2]
    for thisComponent in responseComponents:
        thisComponent.tStart = None
        thisComponent.tStop = None
        thisComponent.tStartRefresh = None
        thisComponent.tStopRefresh = None
        if hasattr(thisComponent, 'status'):
            thisComponent.status = NOT_STARTED
    # reset timers
    t = 0
    _timeToFirstFrame = win.getFutureFlipTime(clock="now")
    responseClock.reset(-_timeToFirstFrame)  # t0 is time of first possible flip
    frameN = -1
    continueRoutine = True
    
    # -------Run Routine "response"-------
    while continueRoutine:
        # get current time
        t = responseClock.getTime()
        tThisFlip = win.getFutureFlipTime(clock=responseClock)
        tThisFlipGlobal = win.getFutureFlipTime(clock=None)
        frameN = frameN + 1  # number of completed frames (so 0 is the first frame)
        # update/draw components on each frame
        
        # *polygon_3* updates
        if polygon_3.status == NOT_STARTED and tThisFlip >= 0.0-frameTolerance:
            # keep track of start time/frame for later
            polygon_3.frameNStart = frameN  # exact frame index
            polygon_3.tStart = t  # local t and not account for scr refresh
            polygon_3.tStartRefresh = tThisFlipGlobal  # on global time
            win.timeOnFlip(polygon_3, 'tStartRefresh')  # time at next scr refresh
            polygon_3.setAutoDraw(True)
        
        # *key_resp_2* updates
        waitOnFlip = False
        if key_resp_2.status == NOT_STARTED and tThisFlip >= 0.0-frameTolerance:
            # keep track of start time/frame for later
            key_resp_2.frameNStart = frameN  # exact frame index
            key_resp_2.tStart = t  # local t and not account for scr refresh
            key_resp_2.tStartRefresh = tThisFlipGlobal  # on global time
            win.timeOnFlip(key_resp_2, 'tStartRefresh')  # time at next scr refresh
            key_resp_2.status = STARTED
            # keyboard checking is just starting
            waitOnFlip = True
            win.callOnFlip(key_resp_2.clock.reset)  # t=0 on next screen flip
        if key_resp_2.status == STARTED and not waitOnFlip:
            theseKeys = key_resp_2.getKeys(keyList=['space'], waitRelease=False)
            if len(theseKeys):
                theseKeys = theseKeys[0]  # at least one key was pressed
                
                # check for quit:
                if "escape" == theseKeys:
                    endExpNow = True
                if key_resp_2.keys == []:  # then this was the first keypress
                    key_resp_2.keys = theseKeys.name  # just the first key pressed
                    key_resp_2.rt = theseKeys.rt
                    # a response ends the routine
                    continueRoutine = False
        
        # check for quit (typically the Esc key)
        if endExpNow or defaultKeyboard.getKeys(keyList=["escape"]):
            core.quit()
        
        # check if all components have finished
        if not continueRoutine:  # a component has requested a forced-end of Routine
            break
        continueRoutine = False  # will revert to True if at least one component still running
        for thisComponent in responseComponents:
            if hasattr(thisComponent, "status") and thisComponent.status != FINISHED:
                continueRoutine = True
                break  # at least one component has not yet finished
        
        # refresh the screen
        if continueRoutine:  # don't flip if this routine is over or we'll get a blank screen
            win.flip()
    
    # -------Ending Routine "response"-------
    for thisComponent in responseComponents:
        if hasattr(thisComponent, "setAutoDraw"):
            thisComponent.setAutoDraw(False)
    trials.addData('polygon_3.started', polygon_3.tStartRefresh)
    trials.addData('polygon_3.stopped', polygon_3.tStopRefresh)
    # check responses
    if key_resp_2.keys in ['', [], None]:  # No response was made
        key_resp_2.keys = None
    trials.addData('key_resp_2.keys',key_resp_2.keys)
    if key_resp_2.keys != None:  # we had a response
        trials.addData('key_resp_2.rt', key_resp_2.rt)
    trials.addData('key_resp_2.started', key_resp_2.tStartRefresh)
    trials.addData('key_resp_2.stopped', key_resp_2.tStopRefresh)
    # the Routine "response" was not non-slip safe, so reset the non-slip timer
    routineTimer.reset()
    thisExp.nextEntry()
    
# completed 2 repeats of 'trials'


# ------Prepare to start Routine "thanks"-------
routineTimer.add(5.000000)
# update component parameters for each repeat
# keep track of which components have finished
thanksComponents = [text_2]
for thisComponent in thanksComponents:
    thisComponent.tStart = None
    thisComponent.tStop = None
    thisComponent.tStartRefresh = None
    thisComponent.tStopRefresh = None
    if hasattr(thisComponent, 'status'):
        thisComponent.status = NOT_STARTED
# reset timers
t = 0
_timeToFirstFrame = win.getFutureFlipTime(clock="now")
thanksClock.reset(-_timeToFirstFrame)  # t0 is time of first possible flip
frameN = -1
continueRoutine = True

# -------Run Routine "thanks"-------
while continueRoutine and routineTimer.getTime() > 0:
    # get current time
    t = thanksClock.getTime()
    tThisFlip = win.getFutureFlipTime(clock=thanksClock)
    tThisFlipGlobal = win.getFutureFlipTime(clock=None)
    frameN = frameN + 1  # number of completed frames (so 0 is the first frame)
    # update/draw components on each frame
    
    # *text_2* updates
    if text_2.status == NOT_STARTED and tThisFlip >= 0.0-frameTolerance:
        # keep track of start time/frame for later
        text_2.frameNStart = frameN  # exact frame index
        text_2.tStart = t  # local t and not account for scr refresh
        text_2.tStartRefresh = tThisFlipGlobal  # on global time
        win.timeOnFlip(text_2, 'tStartRefresh')  # time at next scr refresh
        text_2.setAutoDraw(True)
    if text_2.status == STARTED:
        # is it time to stop? (based on global clock, using actual start)
        if tThisFlipGlobal > text_2.tStartRefresh + 5-frameTolerance:
            # keep track of stop time/frame for later
            text_2.tStop = t  # not accounting for scr refresh
            text_2.frameNStop = frameN  # exact frame index
            win.timeOnFlip(text_2, 'tStopRefresh')  # time at next scr refresh
            text_2.setAutoDraw(False)
    
    # check for quit (typically the Esc key)
    if endExpNow or defaultKeyboard.getKeys(keyList=["escape"]):
        core.quit()
    
    # check if all components have finished
    if not continueRoutine:  # a component has requested a forced-end of Routine
        break
    continueRoutine = False  # will revert to True if at least one component still running
    for thisComponent in thanksComponents:
        if hasattr(thisComponent, "status") and thisComponent.status != FINISHED:
            continueRoutine = True
            break  # at least one component has not yet finished
    
    # refresh the screen
    if continueRoutine:  # don't flip if this routine is over or we'll get a blank screen
        win.flip()

# -------Ending Routine "thanks"-------
for thisComponent in thanksComponents:
    if hasattr(thisComponent, "setAutoDraw"):
        thisComponent.setAutoDraw(False)
thisExp.addData('text_2.started', text_2.tStartRefresh)
thisExp.addData('text_2.stopped', text_2.tStopRefresh)

# Flip one final time so any remaining win.callOnFlip() 
# and win.timeOnFlip() tasks get executed before quitting
win.flip()

# these shouldn't be strictly necessary (should auto-save)
thisExp.saveAsWideText(filename+'.csv')
thisExp.saveAsPickle(filename)
logging.flush()
# make sure everything is closed down
thisExp.abort()  # or data files will save again on exit
win.close()
core.quit()