Adding usage info to the progress viewer program

view_progres.py

@@ -3,23 +3,25 @@
 import sys
 
 if __name__=="__main__":
-	
-	if len(sys.argv) == 2:
-		name = sys.argv[1]
+  
+  if len(sys.argv) == 2:
+    name = sys.argv[1]
 
-		with open(name) as f:
-			lines = f.readlines()
+    with open(name) as f:
+      lines = f.readlines()
 
-			iterations = []
-			losses = []
+      iterations = []
+      losses = []
 
-			for line in lines:
-				try:
-					line.split(',')[1]
-					iterations.append(int(line.split(',')[0]))
-					losses.append(float(line.split(',')[1]))
-				except IndexError:
-					pass
+      for line in lines:
+        try:
+          line.split(',')[1]
+          iterations.append(int(line.split(',')[0]))
+          losses.append(float(line.split(',')[1]))
+        except IndexError:
+          pass
 
-			pl.plot(iterations, losses)
-			pl.show()
+      pl.plot(iterations, losses)
+      pl.show()
+  else :
+    print("Usage: python ", sys.argv[0], " csv-file")