import dash
import numpy as np
import pandas as pd
import plotly.offline as py
import plotly.graph_objs as go
import psycopg2 as pg2
import datetime

conn = pg2.connect(database='X',user='X',password=secret)

cur = conn.cursor()

cur.execute("SELECT * FROM times;")
a = cur.fetchall()
str(a)


df = pd.DataFrame([[ij for ij in i] for i in a])
df.to_json()
df.rename(columns={0: "Serial Number", 1: "Status", 2: "Date", 3: "Time", 4: "Number"}, inplace=True);

x = df["Date"]
data = [go.Scatter(
            x=x,
            y=df["Status"])]

layout = go.Layout(title="Server Data Visualization",
                   xaxis = dict(
                   range = [df.head(1),
                            df.tail(1)]),
                    yaxis=dict(title = "Status"))

fig = go.Figure(data = data, layout = layout)
py.plot(fig)

Traceback (most recent call last):
  File "\srv31data1users$UserDesktopbasic.py", line 37, in <module>
    py.plot(fig)
  File "C:UsersUserAppDataLocalProgramsPythonPython36libsite-packagesplotlyofflineoffline.py", line 469, in plot
    '100%', '100%', global_requirejs=False)
  File "C:UsersUserAppDataLocalProgramsPythonPython36libsite-packagesplotlyofflineoffline.py", line 184, in _plot_html
    cls=utils.PlotlyJSONEncoder)
  File "C:UsersUserAppDataLocalProgramsPythonPython36libjson__init__.py", line 238, in dumps
    **kw).encode(obj)
  File "C:UsersUserAppDataLocalProgramsPythonPython36libsite-packagesplotlyutils.py", line 161, in encode
    encoded_o = super(PlotlyJSONEncoder, self).encode(o)
  File "C:UsersUserAppDataLocalProgramsPythonPython36libjsonencoder.py", line 199, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "C:UsersUserAppDataLocalProgramsPythonPython36libjsonencoder.py", line 257, in iterencode
    return _iterencode(o, 0)
  File "C:UsersUserAppDataLocalProgramsPythonPython36libsite-packagesplotlyutils.py", line 229, in default
    return _json.JSONEncoder.default(self, obj)
  File "C:UsersUserAppDataLocalProgramsPythonPython36libjsonencoder.py", line 180, in default
    o.__class__.__name__)
TypeError: Object of type 'DataFrame' is not JSON serializable