python null
a = Nonepython - check for null values
df.isnull().sum()python if not null
#variable
var = "hello python"
#check is not null
if var is not NaN:
print('Var is not null')python if column is null then
df['real_lastName'] = np.where(df['LastName'].isnull(), df['Middle'], df['LastName'] )
print (df)
FirstName Middle LastName real_lastName
0 Tom Ju NaN Ju
1 Kity NaN Rob Robpython null ==
if foo is None:
...python if null
noneObj = type(None)()
print(NoneObj)
// Check if NoneObj is instance of NoneType class
print(NoneObj is None)
//If-Else example
if (error is not None):
result = error.decode()
else:
result = "Hurray ^_^"
print(result)Copyright © 2021 Codeinu
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