8000 update: Write certain errors to stderr · python/mypy@a978ec0 · GitHub
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mrshumrshu
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update: Write certain errors to stderr
* As described and requested in #1202, this commit makes errors on command line syntax and files not found to go to stderr rather than stdout. Signed-off-by: mr.Shu <mr@shu.io>
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5 files changed

+9
-7
lines changed

5 files changed

+9
-7
lines changed

‎mypy/errors.py

Lines changed: 5 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -374,8 +374,10 @@ def report_internal_error(err: Exception, file: str, line: int) -> None:
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for s in traceback.format_list(tb + tb2):
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print(s.rstrip('\n'))
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print('{}: {}'.format(type(err).__name__, err))
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print('\n*** INTERNAL ERROR ***')
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print('\n*** INTERNAL ERROR ***', file=sys.stderr)
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print('\n{}:{}: error: Internal error --'.format(file, line),
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'please report a bug at https://github.com/JukkaL/mypy/issues')
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print('\nNOTE: you can use "mypy --pdb ..." to drop into the debugger when this happens.')
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'please report a bug at https://github.com/JukkaL/mypy/issues',
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file=sys.stderr)
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print('\nNOTE: you can use "mypy --pdb ..." to drop into the debugger when this happens.',
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file=sys.stderr)
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sys.exit(1)

‎mypy/lex.py

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -880,7 +880,7 @@ def ignore_break(self) -> bool:
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# Lexically analyze a file and dump the tokens to stdout.
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import sys
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if len(sys.argv) != 2:
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print('Usage: lex.py FILE')
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print('Usage: lex.py FILE', file=sys.stderr)
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sys.exit(2)
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fnam = sys.argv[1]
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s = open(fnam, 'rb').read()

‎mypy/main.py

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -56,7 +56,7 @@ def main(script_path: str) -> None:
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raise RuntimeError('unsupported target %d' % options.target)
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except CompileError as e:
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for m in e.messages:
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sys.stdout.write(m + '\n')
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sys.stderr.write(m + '\n')
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sys.exit(1)
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‎mypy/parse.py

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1978,7 +1978,7 @@ def token_repr(tok: Token) -> str:
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import sys
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def usage():
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print('Usage: parse.py [--py2] [--quiet] FILE [...]')
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print('Usage: parse.py [--py2] [--quiet] FILE [...]', file=sys.stderr)
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sys.exit(2)
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args = sys.argv[1:]

‎mypy/stubgen.py

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -148,7 +148,7 @@ def load_python_module_info(module: str, interpreter: str) -> Tuple[str, Optiona
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try:
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output_bytes = subprocess.check_output(cmd_template % code, shell=True)
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except subprocess.CalledProcessError:
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print("Can't import module %s" % module)
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print("Can't import module %s" % module, file=sys.stderr)
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sys.exit(1)
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output = output_bytes.decode('ascii').strip().splitlines()
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module_path = output[0]

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