Fix crash when no data available for a given category and added a quotes file and a blacklist file.

bcbar.py

@@ -13,6 +13,10 @@
 from luma.core.legacy import text, show_message
 from luma.core.legacy.font import proportional, CP437_FONT, TINY_FONT, SINCLAIR_FONT, LCD_FONT
 
+quotes_file = open('quotes.txt', 'r')
+blacklist_file = open('data_blacklist.txt', 'r')
+
+blacklist = blacklist_file.readlines()
 
 while(1):
 
@@ -30,19 +34,24 @@
     disp = [0]*38   #38 is the length of the list data
     for x in range(len(data)):
         if x % 2 == 0:
-            disp.append(data[x])
-            if data[x+1] == None:
+            if data[x+1] != None and data[x]+'\n' not in blacklist:
+                disp.append(data[x])
                 disp.append(data[x+1])
-            else:                
-                disp.append((data[x+1]).replace(',',''))    #Each element of disp is the Name of the parameter & its value. The commas present in the values have been removed for better displaying asthetics
 
 
     disp = list(filter(lambda a:a != 0, disp)) #For some reason every odd element of the list 'disp' is '0'. This removes all occurences of '0' from the list 'disp'
+
     #Remove 'list' in Python2.7
+    new_quote = quotes_file.readline()
+    if new_quote == '':
+        quotes_file = open('quotes.txt', 'r')
+        new_quote = quotes_file.readline()
+
 
+    disp.insert(0, new_quote)
 
     serial = spi(port=0, device=0, gpio=noop())
-    device = max7219(serial, cascaded=4 , block_orientation=-90, rotate=2)
+    device = max7219(serial, cascaded=8 , block_orientation=-90, rotate=2)
 
     for i in range(len(disp)):
         show_message(device, disp[i], fill="white", font=proportional(LCD_FONT),scroll_delay = 0.02) #Change the value of 'scroll_delay' to change the Scrolling Speed

data_blacklist.txt

@@ -0,0 +1,2 @@
+Bitcoin inflation rate per annum at next block halving event:
+Approximate block generation time:

quotes.txt

@@ -0,0 +1,23 @@
+"The computer can be used as a tool to liberate and protect people, rather than to control them." - Hal Finney
+"The Times 03/Jan/2009 Chancellor on brink of second bailout for banks." - Bitcoin Blockchain
+"I think that the Internet is going to be one of the major forces for reducing the role of government." - Milton Friedman
+"A blockchain is a chain of blocks." Peter Todd
+"Bitcoin is the currency of resistance." - Max Keiser
+"The Federal Reserve simply does not have authority to supervise or regulate Bitcoin in any way..." - Janet Yellen
+"A value is valuable when the value of value is valuable to oneself." - Dayananda Saraswati
+"If you don't believe it or don't get it, I don't have the time to try to convince you, sorry." - Satoshi Nakamoto
+"In retrospect, it was inevitable" - Elon Musk
+"So bitcoin is cyber snob currency" - William Shatner
+"Bitcoin is the currency of resistance" - Max Keiser
+"Cryptocurrency is such a powerful concept that it can almost overturn governments" - Charles Lee
+"Bitcoin will do to banks what email did to the postal industry" - Rick Falkvinge
+"You can't stop things like Bitcoin. It will be everywhere and the world will have to readjust. World governments will have to readjust" - John McAfee
+"The swarm is headed towards us" - Satoshi Nakamoto, when WikiLeaks started accepting Bitcoin donation
+"There are 3 eras of currency: Commodity based, politically based, and now, math based" - Chris Dixon
+"Don't care" - Honey Badger
+"Bitcoin may be the TCP/IP of money" - Paul Buchheit
+"Bitcoin actually has the balance and incentives center, and that is why it is starting to take off" - Julian Assange
+"Bitcoin is the beginning of something great: a currency without a government, something necessary and imperative" - Nassim Taleb
+"I think the internet is going to be one of the major forces for reducing the role of government. The one thing that's missing but that will soon be developed, is a reliable e-cash" - Milton Friedman
+"It's money 2.0, a huge huge huge deal" - Chamath Palihapitiya
+"Bitcoin is the most important invention in the history of the world since the Internet." - Roger Ver