pylint is returning the below message for the code that I have below :
data.py:125:30: W0108: Lambda may not be necessary (unnecessary-lambda)
in_p = ', '.join(list(map(lambda x: "'{}'".format(x), data)))
Why is lambda not required here and how can it be refactored?
"'{}'".format is already a function; your lambda expression defines a function that does nothing except take an argument and pass it on to another function. You can simply write
in_p = ', '.join(list(map("'{}'".format, data)))
Some might prefer to use a list comprehension here:
in_p = ', '.join(["'{}'".format(x) for x in data])
It might also be worth using a temporary variable for readability.
quote_it = "'{}'".format
in_p = ', '.join(list(map(quote_it, data)))
# in_p = ', '.join([quote_it(x) for x in data])