File `musicdata.py` has 633 lines of code (exceeds 250 allowed). Consider refactoring.
Open

"""
This class handles very low level queries to the database file, including
creation of tables when files are first created (will do if not exists so
there are no clashes), handling connection and disconnection from the DB,
etc.

Found in implementation/primaries/ExtractMetadata/classes/DataLayer/musicdata.py - About 1 day to fix

`MusicData` has 39 functions (exceeds 20 allowed). Consider refactoring.
Open

class MusicData(querylayer.QueryLayer):
    parsers = {"tempos": TempoParser(),
               "time_signatures": MeterParser(),
               "instruments": InstrumentParser()}

Found in implementation/primaries/ExtractMetadata/classes/DataLayer/musicdata.py - About 5 hrs to fix

Cyclomatic complexity is too high in method get_user_playlists_by_filename. (6)
Open

    def get_user_playlists_by_filename(self, filename):
        data = self.query({'filename': filename})
        result = {}
        if len(data) > 0:
            data = data[0]

Found in implementation/primaries/ExtractMetadata/classes/DataLayer/musicdata.py by radon

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Cyclomatic Complexity

Cyclomatic Complexity corresponds to the number of decisions a block of code contains plus 1. This number (also called McCabe number) is equal to the number of linearly independent paths through the code. This number can be used as a guide when testing conditional logic in blocks.

Radon analyzes the AST tree of a Python program to compute Cyclomatic Complexity. Statements have the following effects on Cyclomatic Complexity:

Construct	Effect on CC	Reasoning
if	+1	An if statement is a single decision.
elif	+1	The elif statement adds another decision.
else	+0	The else statement does not cause a new decision. The decision is at the if.
for	+1	There is a decision at the start of the loop.
while	+1	There is a decision at the while statement.
except	+1	Each except branch adds a new conditional path of execution.
finally	+0	The finally block is unconditionally executed.
with	+1	The with statement roughly corresponds to a try/except block (see PEP 343 for details).
assert	+1	The assert statement internally roughly equals a conditional statement.
Comprehension	+1	A list/set/dict comprehension of generator expression is equivalent to a for loop.
Boolean Operator	+1	Every boolean operator (and, or) adds a decision point.

Source: http://radon.readthedocs.org/en/latest/intro.html

Cyclomatic complexity is too high in method getPieceByInstrumentsOrSimilar. (6)
Open

    def getPieceByInstrumentsOrSimilar(
            self,
            instruments,
            archived=False,
            online=False):

Found in implementation/primaries/ExtractMetadata/classes/DataLayer/musicdata.py by radon

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Exclude checks
- Disable engine
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Cyclomatic Complexity

Cyclomatic Complexity corresponds to the number of decisions a block of code contains plus 1. This number (also called McCabe number) is equal to the number of linearly independent paths through the code. This number can be used as a guide when testing conditional logic in blocks.

Radon analyzes the AST tree of a Python program to compute Cyclomatic Complexity. Statements have the following effects on Cyclomatic Complexity:

Construct	Effect on CC	Reasoning
if	+1	An if statement is a single decision.
elif	+1	The elif statement adds another decision.
else	+0	The else statement does not cause a new decision. The decision is at the if.
for	+1	There is a decision at the start of the loop.
while	+1	There is a decision at the while statement.
except	+1	Each except branch adds a new conditional path of execution.
finally	+0	The finally block is unconditionally executed.
with	+1	The with statement roughly corresponds to a try/except block (see PEP 343 for details).
assert	+1	The assert statement internally roughly equals a conditional statement.
Comprehension	+1	A list/set/dict comprehension of generator expression is equivalent to a for loop.
Boolean Operator	+1	Every boolean operator (and, or) adds a decision point.

Source: http://radon.readthedocs.org/en/latest/intro.html

Function `add_instruments_to_piece` has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.
Open

    def add_instruments_to_piece(self, data, piece_id):
        result_data = copy.deepcopy(data)
        data_keys = ['keys', 'clefs']
        for instrument in result_data["instruments"]:
            name = instrument['name']

Found in implementation/primaries/ExtractMetadata/classes/DataLayer/musicdata.py - About 1 hr to fix

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Cognitive Complexity