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"""Glue for the "yapf" library.
"""
import os
import sys
from elpy.rpc import Fault
YAPF_NOT_SUPPORTED = sys.version_info < (2, 7) or (
sys.version_info >= (3, 0) and sys.version_info < (3, 4))
try:
if YAPF_NOT_SUPPORTED:
yapf_api = None
else:
from yapf.yapflib import yapf_api
from yapf.yapflib import file_resources
except ImportError: # pragma: no cover
yapf_api = None
def fix_code(code, directory):
"""Formats Python code to conform to the PEP 8 style guide.
"""
if not yapf_api:
raise Fault('yapf not installed', code=400)
style_config = file_resources.GetDefaultStyleForDir(directory or os.getcwd())
try:
reformatted_source, _ = yapf_api.FormatCode(code,
filename='<stdin>',
style_config=style_config,
verify=False)
return reformatted_source
except Exception as e:
raise Fault("Error during formatting: {}".format(e),
code=400)