helpdoc = """
A simple utility that verifies the syntax for python scripts.
The checks it does are :
* Check for 'tab' characters in .py files
* Compile errors in py sources
Usage:
python syntax_checker.py <python_source_file> [<python_source_file> ..]
"""
import py_compile
import sys
import os
import re
tabs_search_rex = re.compile("^\s*\t+",re.MULTILINE|re.DOTALL)
if __name__ == "__main__":
if len(sys.argv) < 2:
print "Error: Unknown arguments"
print helpdoc
sys.exit(1)
for fname in sys.argv[1:]:
if not os.path.exists(fname):
print "Error: Cannot recognize %s as a file" % fname
sys.exit(1)
if fname.split('.')[-1] != 'py':
print "Note: %s is not a valid python file. Skipping." % fname
continue
fh = open(fname)
strdata = fh.readlines()
lineno = 0
tab_check_status = True
for linedata in strdata:
lineno += 1
if len(tabs_search_rex.findall(linedata)) > 0 :
print "Error: Found a TAB character at %s:%d" % (fname, lineno)
tab_check_status = False
if tab_check_status == False:
print "Error: Syntax check failed. Please fix the errors and try again."
sys.exit(1)
try:
compile_result = py_compile.compile(fname, cfile="/dev/null", doraise=True)
except py_compile.PyCompileError as exc:
print str(exc)
print "Error: Compilation failed. Please fix the errors and try again."
sys.exit(1)
print "Success: Checked %s. No syntax errors found." % fname
sys.exit(0)