def from_file(file: TextIOWrapper) -> "Map":
"""
Create map from given file
:param file: open file
:return: new Map
"""
if file.closed:
raise ValueError("Creation of Map from closed file.")
if "r+" not in file.mode:
raise ValueError(
"File used for map creation has to be open in 'r+' mode in order to write and read, and not in"
" '%s' mode" % file.mode
)
# Because \r\n is automatically converted to \n if using translation of the newline (that is the default mode)
# we have to reconfigure the stream in order not to use the translation. Otherwise \r\n will be treated as ONE
# CHARACTER when using file.read() but TWO BYTES when using file.seek()
file.reconfigure(newline="")
return Map(FileContent(file))
