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Function count_coverage has a Cognitive Complexity of 55 (exceeds 5 allowed). Consider refactoring.
Open

    def count_coverage(self, contig=None, start=None, stop=None, region=None,
                       quality_threshold=15, read_callback='all',
                       reference=None, end=None, base_quality_threshold=0):
        """ Counts the coverage of each base supported by a read the given interval.
Severity: Minor
Found in bamnostic/bam.py - About 1 day to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function cigar_alignment has a Cognitive Complexity of 50 (exceeds 5 allowed). Consider refactoring.
Open

def cigar_alignment(seq=None, cigar=None, start_pos = 0, qualities=None, base_qual_thresh=0, query=False):
    """Use the CIGAR to filter out all unaligned data bases

    Any clipping results in the removal of those bases. If an insertion is seen in
    the CIGAR, those bases are removed from the sequence. If a deletion is seen in
Severity: Minor
Found in bamnostic/utils.py - About 7 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function fetch has a Cognitive Complexity of 33 (exceeds 5 allowed). Consider refactoring.
Open

    def fetch(self, contig=None, start=None, stop=None, region=None,
              tid=None, until_eof=False, multiple_iterators=False,
              reference=None, end=None):
        """Creates a generator that returns all reads within the given region. (inclusive, exclusive)
Severity: Minor
Found in bamnostic/bam.py - About 4 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function parse_region has a Cognitive Complexity of 25 (exceeds 5 allowed). Consider refactoring.
Open

def parse_region(contig=None, start=None, stop=None, region=None,
                 tid=None, reference=None, end=None, until_eof=False):
    r""" Parses region information from all user set parameters.

    The main goal of this function is to handle the many different ways a user
Severity: Minor
Found in bamnostic/utils.py - About 3 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function __init__ has a Cognitive Complexity of 24 (exceeds 5 allowed). Consider refactoring.
Open

    def __init__(self, _io):
        """ Initialize the header

        Args:
            _io (:py:obj:`file`): opened BAM file object
Severity: Minor
Found in bamnostic/bam.py - About 3 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

        if ref_id is not None and not idx:
            try:
                ref_start, _, _ = self.ref_indices[ref_id]
                self._io.seek(ref_start)
            except KeyError:
Severity: Major
Found in bamnostic/bai.py and 1 other location - About 2 hrs to fix
bamnostic/csi.py on lines 322..327

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 61.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

        if ref_id is not None and not idx:
            try:
                ref_start, _, _ = self.ref_indices[ref_id]
                self._io.seek(ref_start)
            except KeyError:
Severity: Major
Found in bamnostic/csi.py and 1 other location - About 2 hrs to fix
bamnostic/bai.py on lines 350..355

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 61.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Function read has a Cognitive Complexity of 20 (exceeds 5 allowed). Consider refactoring.
Open

    def read(self, size=-1):
        """Read method for the BGZF module.

        Args:
            size (int): the number of bytes to read from file. Advances the cursor.
Severity: Minor
Found in bamnostic/bgzf.py - About 2 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function __init__ has a Cognitive Complexity of 19 (exceeds 5 allowed). Consider refactoring.
Open

    def __init__(self, filepath_or_object, mode = 'xb', compresslevel = 6, ignore_overwrite = False,
                copy_header = None, header = b'', reference_names = None, reference_lengths = None):
        """Useful class for writing BAM files. 

        Note:
Severity: Minor
Found in bamnostic/bam.py - About 2 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function _tagger has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.
Open

    def _tagger(self):
        """Processes the variety of tags that accompany sequencing reads

        The BAM format does not store the length of string and hex-formatted byte
        arrays. These are null-terminated. Due to this, when parsing the byte stream,
Severity: Minor
Found in bamnostic/core.py - About 2 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function check_index has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.
Open

    def check_index(self, index_filename=None, req_idx=False):
        """ Checks to make sure index file is available. If not, it disables random access.

        Args:
            index_filename (str): path to index file (BAI) if it does not fit naming convention (default: None).
Severity: Minor
Found in bamnostic/bam.py - About 2 hrs to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

        if self.current_ref is None:
            self.current_ref = self.get_ref(ref_id)
        elif self.current_ref.ref_id != ref_id:
            self.current_ref = self.get_ref(ref_id)
Severity: Major
Found in bamnostic/csi.py and 1 other location - About 2 hrs to fix
bamnostic/bai.py on lines 395..398

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 53.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Identical blocks of code found in 2 locations. Consider refactoring.
Open

        if self.current_ref is None:
            self.current_ref = self.get_ref(ref_id)
        elif self.current_ref.ref_id != ref_id:
            self.current_ref = self.get_ref(ref_id)
Severity: Major
Found in bamnostic/bai.py and 1 other location - About 2 hrs to fix
bamnostic/csi.py on lines 361..364

Duplicated Code

Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:

Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.

When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).

Tuning

This issue has a mass of 53.

We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.

The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.

If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.

See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.

Refactorings

Further Reading

Function _sam_header_to_ref_list has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring.
Open

def _sam_header_to_ref_list(header):
    """Modified code from Peter Cock's [BamWriter](https://github.com/peterjc/biopython/blob/SamBam2015/Bio/Sequencing/SamBam/__init__.py#L1714)

    Removes blank lines, ensures trailing newlines, spots some errors.
Severity: Minor
Found in bamnostic/bam.py - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function get_bins has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring.
Open

    def get_bins(self, n_bins, ref_id=None, idx=False):
        """Simple function that iteratively unpacks the data of a number (`n_bin`)
        of bins.

        As the function discovers the number of chunks needed for a given
Severity: Minor
Found in bamnostic/bai.py - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Function get_bins has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring.
Open

    def get_bins(self, n_bins, ref_id=None, idx=False):
        """Simple function that iteratively unpacks the data of a number (`n_bin`)
        of bins.

        As the function discovers the number of chunks needed for a given
Severity: Minor
Found in bamnostic/csi.py - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

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

    def write_header(self, copy_header = None, header = b'', reference_names = None, reference_lengths = None):
        """Modified code from Peter Cock's [BamWriter](https://github.com/peterjc/biopython/blob/SamBam2015/Bio/Sequencing/SamBam/__init__.py#L1714)

        Writes the header into a BAM file
Severity: Minor
Found in bamnostic/bam.py - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

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

    def query(self, ref_id, start, stop=-1):
        """ Main query function for determining seek offset to BAM section that
        AlignedRead objects from specified region start

        Args:
Severity: Minor
Found in bamnostic/bai.py - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

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

    def get_cigar_stats(self):
        """Gets the counts of each CIGAR operation in the read and number of
        nucleotides related to those given operations.

        Returns:
Severity: Minor
Found in bamnostic/core.py - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

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

    def __init__(self, filepath_or_object, mode="rb", max_cache=None, 
                filename=None, duplicate_filehandle=None, ignore_truncation=False):
        """Initialize the class.

        Args:
Severity: Minor
Found in bamnostic/bgzf.py - About 1 hr to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

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