blob: e8477cb4f83f2b9bc6c5efe5c98232e2bd100b36 (
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import sys
def collect(values):
result = []
_collect(values, result)
return result
def _collect(values, result):
for value in values:
if isinstance(value, list):
_collect(value, result)
elif value is not None:
result.append(value)
def unique(values):
output = []
seen = set()
for value in values:
if value not in seen:
seen.add(value)
output.append(value)
return output
def flat_map(func, values):
return [
element
for value in values
for element in func(value)
]
if sys.version_info[0] == 2:
map = map
filter = filter
else:
import builtins
def map(*args, **kwargs):
return list(builtins.map(*args, **kwargs))
def filter(*args, **kwargs):
return list(builtins.filter(*args, **kwargs))
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