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only perform migrate_config parsing if it is a list

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This commit is contained in:
Anthony Sottile 2020-11-05 16:05:41 -08:00
parent b2207e5b04
commit b4ab84df58
1 changed files with 10 additions and 10 deletions
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2
pre_commit/commands/migrate_config.py
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@ -16,6 +16,7 @@ def _is_header_line(line: str) -> bool:
def _migrate_map(contents: str) -> str:
if isinstance(yaml_load(contents), list):
# Find the first non-header line
lines = contents.splitlines(True)
i = 0
@ -26,7 +27,6 @@ def _migrate_map(contents: str) -> str:
header = ''.join(lines[:i])
rest = ''.join(lines[i:])
if isinstance(yaml_load(contents), list):
# If they are using the "default" flow style of yaml, this operation
# will yield a valid configuration
try: