10 examples of 'python open file if exists' in Python

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def open_file(file_path):
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    global file
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    file = open(file_path, 'wb')
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    reset()

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def try_open(filename, mode):
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	for each in codecs:
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		try:
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			return open(filename, mode, encoding=each)
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		except UnicodeDecodeError:
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			continue
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	raise UnicodeDecodeError

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def open_python_file(filename):
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    """Open a read-only Python file taking proper care of its encoding.
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    In Python 3, we would like all files to be opened with utf-8 encoding.
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    However, some author like to specify PEP263 headers in their source files
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    with their own encodings. In that case, we should respect the author's
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    encoding.
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    """
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    import tokenize
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    if hasattr(tokenize, "open"):  # Added in Python 3.2
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        # Open file respecting PEP263 encoding. If no encoding header is
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        # found, opens as utf-8.
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        return tokenize.open(filename)
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    else:
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        return open(filename, "r")

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def open(filename, mode, *args):
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    mode = mode.replace('U', '')
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    return _open(filename, mode, *args, errors='ignore')

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def _open_file(filename):
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    if sys.platform == "win32":
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        os.startfile(filename)
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    else:
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        if sys.platform == "darwin":
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            opener = "open"
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        else:
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            opener = "xdg-open"
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        subprocess.call([opener, filename])

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def open(file, mode=None, encoding=None):
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    if mode is None:
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        mode = 'r'
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    if '/' in file:
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        if 'w' or 'a' in mode:
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            path_dir = os.path.dirname(file)
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            if not os.path.isdir(path_dir):
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                os.makedirs(path_dir)
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    f = builtins.open(file, mode=mode, encoding=encoding)
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    return f

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def myopen(filename, mode="r"):
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    if "w" in mode:
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        ensure_dir(filename)
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    return open(filename, mode)

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def file_open(*args, **kwargs):
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    """Open file
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    see built-in open() documentation for more details
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    Note: The reason this is kept in a separate module is to easily
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    be able to provide a stub module that doesn't alter system
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    state at all (for unit tests)
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    """
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    return open(*args, **kwargs)

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def file_exists( pathname ):
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    """checks that a given file exists"""
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    result = 1
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    try:
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        file = open( pathname, "r" )
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        file.close()
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    except:
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        result = None
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        sys.stderr.write( pathname + " couldn't be accessed\n" )
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    return result

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def _open_file(self, module_name):
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        module_json_cache = self.module_json_cache
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        if module_name in module_json_cache:
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            for file_name in module_json_cache[module_name]["files"]:
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                if os.path.isfile(file_name) and not file_name.endswith("-meta.xml"): 
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                    self.window.open_file(file_name)