Porting Notes For `original/betagui.py`¶

Python 2 To 3 Issues¶

from Tkinter import * must become Python 3 tkinter imports.
from tkFileDialog import * and from FileDialog import * are Python 2 names.
print statements use Python 2 syntax throughout.
thread module import is Python 2 specific and appears unnecessary.
Mixed tabs and spaces are present in several blocks and may break under stricter parsing or reformatting.
Unicode literals such as u"\N{GREEK SMALL LETTER Xi}" are fine in Python 3 but surrounding Tk code still needs migration.
Import-time Tk() construction is hostile to headless testing and should be delayed.

epics is required at import time because PVs are created immediately.
.get() is called on many PVs during import, so startup depends on live EPICS connectivity.
Tk() is created at import time, so import requires a display-capable Tk environment.
matplotlib is imported and configured at import time.
rc('text', usetex=True) introduces a LaTeX dependency that may fail on startup.

always writes pvS1P1 and pvS1P2 at the end even if they are not in sextlist
I did not find an active caller in the main workflow

setcur(...) is called in start_poly() but is not defined anywhere in the file.
fine_bump_status appears in a global statement but is never defined.
mea_poly_status, scan4D_status, mat_status, bump_dim, cor_option, and Bbuf are used as globals with implicit lifecycle inside GUI callbacks; some are only created if specific UI paths are taken.

Shebang is #!usr/bin/python instead of #!/usr/bin/python.
Duplicate imports: threading, thread, and curve_fit are imported twice.
delayMeasTune input is read in MeaChrom() and never used.
nmeasurements is decremented inside the RF loop, changing behavior across scan points.
np.delete(fbuf[l],np.argmax(...),np.argmin(...)) is not valid use of np.delete; third positional argument is axis, not a second index.
print 'initial rf frequency is:',frf0,' MHz' conflicts with other comments treating RF as kHz or Hz.
pvOptTab is created globally, but MeaChrom() reads a fresh epics.PV('MLSOPCCP:actOptRmpTblSet') instead of reusing it.
if cor_option==1and flag2D3D: is valid tokenization but poor style and easy to misread.
start_bump() steps sextupoles by -1 and then +1 from the shifted value; it does not explicitly restore the original starting current after each dimension.
start_poly() references pvS2P2, whereas main correction logic often uses split channels pvS2P2K and pvS2P2L.
bumpdataS=bumpdataS-bumpdataS[-float(paras[i][1].get())-1,:] uses a float index and is almost certainly broken.
Sc and Sd in gen_scan_tab() use the minimum value for both linspace endpoints, so they do not actually scan.
ndd=int(Scanentries[2][2].get()) probably should use row 3 instead of row 2.
Several variables and comments use inconsistent spellings, such as pvwhitenosie, varibales, measuremnts, coeffecient, setupoles.

commented-out alternate tune PVs
commented-out BPM waveform decode
set_Isextupole_slowly() looks unused and incomplete
set_sext_degauss() looks unused in the main GUI path
commented-out sextupole write calls in gen_scan_tab() indicate a half-disabled feature
docs mention of a “fine bump” workflow is not matched by complete executable code

import can hang or fail if PVs are unavailable
GUI updates are performed from worker threads, which is unsafe in Tkinter
EPICS writes are active by default from the GUI
machine-state restoration is incomplete if a run is interrupted at the wrong point
matrix inversion has no error handling for singular or ill-conditioned matrices
measurement logic assumes tune and RF reads always return numeric values
file dialogs are used deep inside worker flows, mixing user interaction and background work
offline testing is effectively impossible in the current structure