External environment refers to the major factors and forces outside the organization that have the potential to significantly affect the performance of an organization. External environment is divided into two parts i.e. mega environment or general environment and specific or task environment.
_tcscat is a C function, to concatenate C-style strings; CString is a class (which has built in concatenation via operator+), not a C-style string.
bitstring module. bitstring is a pure Python module designed to help make the creation and analysis of binary data as simple and natural as possible. Bitstrings can be constructed from integers (big and little endian), hex, octal, binary, strings or files.