added keystroke(esc) for stopping endurance test during the for loop execution !

hp4155/memristor/memristor.py

 ### this is the new memrstor measurement (set and reset as many times as the user wants and full sweeps with a button)
 from help import *
 import ipywidgets as widgets
+from keyboard import add_hotkey,remove_hotkey
 
 def memristor():
     #parameters set by the user
@@ -260,6 +261,13 @@ def memristor():
                     ax2.set(xlabel='Voltage(V)',ylabel='Current(A)')
                     ax2.set_yscale('log')
 
+                    stop = False
+
+                    def break_loop():
+                        nonlocal stop
+                        stop = True
+                        
+                    add_hotkey("esc",break_loop)
                     #execute number of measurements
                     for i in range(number.value):
                         V12,I12 = sweep(0,Vset,step,CC_vset,integration_time,device) #set
@@ -286,6 +294,19 @@ def memristor():
                         print(df)
                         display(fig)
 
+                        #check for loop termination
+                        if stop == True:
+                            print("endurance stopped after esc!")
+                            f.write("endurance stopped!\n\n")
+                            break
+                    else:
+                        print("endurance completed!")
+                        f.write("endurance completed!\n\n")
+                        
+
+                    remove_hotkey('esc')
+                    stop = False
+                    
                     set.disabled = False
                     reset.disabled=False
                     full.disabled =False

hp4155/memristor/memristor_buttons.ipynb

@@ -9,7 +9,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "df708526c73e4219b9ebb5c74a3fd271",
+       "model_id": "c14f1c65cb75400e9f3ce8c3703d7a99",
        "version_major": 2,
        "version_minor": 0
       },
@@ -23,7 +23,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "5ed7f3d1a4ed451aabbca2bf236be413",
+       "model_id": "12bcdd599fbb404ba1d55569550ca2ce",
        "version_major": 2,
        "version_minor": 0
       },
@@ -44,7 +44,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "4dbb84e87dc84830904fb1fc6425e999",
+       "model_id": "4d15574dd8a8446cbb853b71056069d6",
        "version_major": 2,
        "version_minor": 0
       },
@@ -65,7 +65,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "978ed501be0748c0a55b80458b0653b1",
+       "model_id": "79f012dfd31d4ed4ae00b100d7a48586",
        "version_major": 2,
        "version_minor": 0
       },
@@ -79,7 +79,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "10de600753a941f493dee0709e56ea79",
+       "model_id": "9d266524e5f14609b48f0e698acf2476",
        "version_major": 2,
        "version_minor": 0
       },