Bug: in the morning when csv is missing data the script will fail

[bhlevca]

At Line 104 newdeaths = df['newdeaths'] and perhaps other places

Test for df.isna() and if true populate with zeros

[bhlevca]

Also there are mulitple issues with the code.
For Example: == Noneshould be replaced with is None also != with not
Move initializations like self.variable={} in _init to be compliant with PEP8