import sys
import re
PY_PATTERN = re.compile(
r"""
s*#(?:[^rn])*
| s*__(?:[^rn]*)
| "{3}(?:\.|[^\])*"{3}
| '{3}(?:\.|[^\])*'{3}
""",
re.VERBOSE | re.MULTILINE | re.DOTALL
)
txt = open("cmd.txt").readlines()
b = re.sub(PY_PATTERN,'', ''.join(txt))
single = re.compile(r"nn")
b = re.sub(single,'n',b)
print(b)
