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#!/usr/bin/env python3
import errno
import sys
def write_data_to_path_if_changed(data, path):
# See if the file contents are identical.
try:
with open(path) as f:
if f.read() == data:
print("note: %s: file contents unchanged" % (
path,), file=sys.stderr)
return
except IOError as e:
if e.errno != errno.ENOENT:
raise
# Otherwise, write the data.
with open(path, 'wb') as f:
f.write(data)
print("note: %s: updated file" % (path,), file=sys.stderr)
# Split the input into even and odd numbers.
even = []
odd = []
for line in sys.stdin:
for number in line.split():
if number.isdigit():
value = int(number)
if value % 2:
odd.append(value)
else:
even.append(value)
if len(sys.argv) != 3:
raise SystemExit("error: invalid number of arguments")
odd_data = '\n'.join(map(str, sorted(odd))) + '\n'
even_data = '\n'.join(map(str, sorted(even))) + '\n'
_, odd_out_path, even_out_path = sys.argv
# Write the files, if changed.
write_data_to_path_if_changed(odd_data, odd_out_path)
write_data_to_path_if_changed(even_data, even_out_path)
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