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from typing import List, Optional, Tuple
def parse(line: str) -> Tuple[str, str]:
"""Parses import lines for comments and returns back the
import statement and the associated comment.
"""
comment_start = line.find("#")
if comment_start != -1:
return (line[:comment_start], line[comment_start + 1 :].strip())
return (line, "")
def add_to_line(
comments: Optional[List[str]],
original_string: str = "",
removed: bool = False,
comment_prefix: str = "",
) -> str:
"""Returns a string with comments added if removed is not set."""
if removed:
return parse(original_string)[0]
if not comments:
return original_string
else:
unique_comments: List[str] = []
for comment in comments:
if comment not in unique_comments:
unique_comments.append(comment)
return f"{parse(original_string)[0]}{comment_prefix} {'; '.join(unique_comments)}"
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