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import ast
import inspect
import os
import sys
from itertools import chain
import six
from cheap_repr import cheap_repr, try_register_repr
NO_ASTTOKENS = (
'pypy' in sys.version.lower()
or sys.version_info[:2] in [(3, 4), (3, 8)]
)
file_reading_errors = (
IOError,
OSError,
ValueError # IronPython weirdness.
)
def shitcode(s):
return ''.join(
(c if (0 < ord(c) < 256) else '?') for c in s
)
def truncate(seq, max_length, middle):
if len(seq) > max_length:
left = (max_length - len(middle)) // 2
right = max_length - len(middle) - left
seq = seq[:left] + middle + seq[-right:]
return seq
def truncate_string(string, max_length):
return truncate(string, max_length, '...')
def truncate_list(lst, max_length):
return truncate(lst, max_length, ['...'])
def ensure_tuple(x, split=False):
if split and isinstance(x, six.string_types):
x = x.replace(',', ' ').split()
if not isinstance(x, (list, set, tuple)):
x = (x,)
return tuple(x)
def short_filename(code):
result = os.path.basename(code.co_filename)
if result.endswith('.pyc'):
result = result[:-1]
return result
def is_comprehension_frame(frame):
return frame.f_code.co_name in ('<listcomp>', '<dictcomp>', '<setcomp>')
def needs_parentheses(source):
def code(s):
return compile(s.format(source), '<variable>', 'eval').co_code
try:
without_parens = code('{}.x')
except SyntaxError:
# Likely a multiline expression that needs parentheses to be valid
code('({})')
return True
else:
return without_parens != code('({}).x')
def with_needed_parentheses(source):
if needs_parentheses(source):
return '({})'.format(source)
else:
return source
REPR_TARGET_LENGTH = 100
def my_cheap_repr(x):
return cheap_repr(x, target_length=REPR_TARGET_LENGTH)
class ArgDefaultDict(dict):
def __init__(self, factory):
super(ArgDefaultDict, self).__init__()
self.factory = factory
def __missing__(self, key):
result = self[key] = self.factory(key)
return result
def optional_numeric_label(i, lst):
if len(lst) == 1:
return ''
else:
return ' ' + str(i + 1)
def is_pathlike(x):
if hasattr(os, 'PathLike'):
return isinstance(x, os.PathLike)
return (
hasattr(x, '__fspath__') or
# Make a concession for older `pathlib` versions:
(hasattr(x, 'open') and
'path' in x.__class__.__name__.lower())
)
try:
iscoroutinefunction = inspect.iscoroutinefunction
except AttributeError:
def iscoroutinefunction(_):
return False
try:
try_statement = ast.Try
except AttributeError:
try_statement = ast.TryExcept
try:
builtins = __import__("__builtin__")
except ImportError:
builtins = __import__("builtins")
try:
FormattedValue = ast.FormattedValue
except:
class FormattedValue(object):
pass
def no_args_decorator(args, kwargs):
return len(args) == 1 and inspect.isfunction(args[0]) and not kwargs
try:
from functools import lru_cache
except ImportError:
from backports.functools_lru_cache import lru_cache
class DirectRepr(str):
def __repr__(self):
return self
try:
from django.db.models import QuerySet
except ImportError:
class QuerySet(object):
pass
def _sample_indices(length, max_length):
if length <= max_length + 2:
return range(length)
else:
return chain(range(max_length // 2),
range(length - max_length // 2,
length))
@try_register_repr('pandas', 'Series')
def _repr_series_one_line(x, helper):
n = len(x)
if n == 0:
return repr(x)
newlevel = helper.level - 1
pieces = []
maxparts = _repr_series_one_line.maxparts
for i in _sample_indices(n, maxparts):
k = x.index[i:i + 1].format(sparsify=False)[0]
v = x.iloc[i]
pieces.append('%s = %s' % (k, cheap_repr(v, newlevel)))
if n > maxparts + 2:
pieces.insert(maxparts // 2, '...')
return '; '.join(pieces)
|
