supports iter protocol, returns nothing

bananas.py

@@ -1,15 +1,17 @@
 #! /usr/bin/python3
 
-from seth_classes import Banana
+from seth_classes import ReadSeth 
 import argparse
 import numpy as np
 import pandas as pd
 
 parser = argparse.ArgumentParser(prog='bananas.py')
 parser.add_argument('filepath')
+parser.add_argument( '-v', '--verbose', action='store_true') 
 args = parser.parse_args()
 
 fp = args.filepath
+v = args.verbose
 
 def make_hist(dataframe, binsize = 100):
     mask_slice0 = dataframe['sl'] == '0'
@@ -19,6 +21,6 @@ def make_hist(dataframe, binsize = 100):
     print(slice0)
 
 
-test = Banana()
-make_hist(test.read_from_file(fp))
-
+test = ReadSeth(fp, v)
+for event in test:
+    print(event)

seth_classes.py

@@ -4,7 +4,7 @@ import numpy as np
 import pandas as pd
 
 
-class Banana():
+class Banana:
 
     def read_from_file(self, filepath):
         d={'clock':[], 'sl':[], 'channel':[], 'dtime':[], 'lost':[], 'a':[], 'b':[], 'phase':[], 'banana':[], 'pha':[]} # slice (sl) is called det in ahepamfile.c
@@ -17,3 +17,50 @@ class Banana():
                         d[keys[i]].append(contents[i+1])
             return pd.DataFrame(d)
 
+
+class ReadSeth:
+
+    def __init__(self, filename, verbose = False):
+        self.verbose = verbose
+        self.filename = filename
+        self.file = open(filename, 'r')
+        self.partial=[]
+        self.complete=[]
+
+    def __iter__(self):
+        return self 
+
+    def __next__(self):
+        e = self.read_more()
+        while not self.complete:
+            if not self.partial:
+                raise StopIteration
+        e = self.complete[0]
+        self.complete[0:1]=[]
+        return e
+
+
+    time_old=100
+    
+    def read_more(self):
+        time_window = 5
+        l = self.file.readline()
+        if self.verbose:
+            print(l, l[0])
+        if l[0] == ' E':
+            line = [float(num) for num in l.split(r'\s+')[1:]]
+            print(line)
+            if not self.partial or line[0] + time_window <= self.partial[0][0]:
+                self.partial.append(line)
+            self.read_more()
+        self.complete.append(self.partial)
+        self.partial = []
+
+
+class SethEvent:
+
+    def __init__(self):
+        self.eventlines = []
+
+    def append_line(self, line: list):
+        self.eventlines.append(line)