python sys

1import sys
2
3sys.exit(0)
4

1import sys
2print('Python version you are using')
3print(sys.version)
4print('Informantion')
5print(sys.version_info)
6
7

1def displayhook(value):
2    if value is None:
3        return
4    # Set '_' to None to avoid recursion
5    builtins._ = None
6    text = repr(value)
7    try:
8        sys.stdout.write(text)
9    except UnicodeEncodeError:
10        bytes = text.encode(sys.stdout.encoding, 'backslashreplace')
11        if hasattr(sys.stdout, 'buffer'):
12            sys.stdout.buffer.write(bytes)
13        else:
14            text = bytes.decode(sys.stdout.encoding, 'strict')
15            sys.stdout.write(text)
16    sys.stdout.write("\n")
17    builtins._ = value
18

1if sys.platform.startswith('freebsd'):
2    # FreeBSD-specific code here...
3elif sys.platform.startswith('linux'):
4    # Linux-specific code here...
5elif sys.platform.startswith('aix'):
6    # AIX-specific code here...
7

1# arguments
2def test_var_args(f_arg, *argv):
3    print("first normal arg:", f_arg)
4    for arg in argv:
5        print("another arg through *argv :", arg)
6
7test_var_args('yasoob','python','eggs','test')
8
9# keywork arguments
10def test_var_kwargs(f_arg, **kwargs):
11  	print(f_arg)
12    for (key, item) in kwargs.items():
13      	print("Keyword: ", key)
14        print("Value: ", item)
15
16test_var_kwargs('yasoob', x = 12)
17