support multiple files.

generate.py

+import glob
+import os
+
 import pandas as pd
 import matplotlib.pyplot as plt
 import plotly.tools as tls
 
 #"off":"dicht", 'on':"open"
-df = pd.read_csv(r"input/input.csv")
+all_files = glob.glob(os.path.join("input" , "*.csv"))
+li = []
+for filename in all_files:
+    df = pd.read_csv(filename, index_col=None, header=0)
+    li.append(df)
+
+df = pd.concat(li, axis=0, ignore_index=True)
+df.drop_duplicates(inplace=True)
 df['datetime'] = pd.to_datetime(df['datetime'])
 raam = df[df['metadata_id'] == 420].drop(columns='metadata_id')
 raam = raam.set_index(raam['datetime'])