Как прочитать файл в кодировке cp1251?

inputFile = codecs.open('input.txt', 'r', 'cp1251')
words = inputFile.readline()
print(words)

inputFile = open('input.txt', 'r', 'cp1251')
words = inputFile.readline()
print(words)

Traceback (most recent call last):
  File "E:/Users/DartLenin/PycharmProjects/test/test.py", line 6, in <module>
    inputFile = open('input.txt', 'r', 'cp1251')
TypeError: an integer is required

input = open('aaa.txt').read()
print(input)

input = open('input.txt').read()
print(input.encode('cp688'))

LookupError: unknown encoding: cp688

inputFile = codecs.open('input.txt', 'r', encoding='cp1251')
words = inputFile.readline()
print(words)

inputFile = codecs.open('input.txt', 'r',encoding='utf-8')
words = inputFile.readline()
print(words)

words.decode('cp1251')

inputFile = codecs.open('input.txt', 'r',encoding='utf-8')
words = inputFile.readline()
print(words)

>>> print(open.__doc__)
open(file, mode='r', buffering=-1, encoding=None,
     errors=None, newline=None, closefd=True, opener=None) -> file object
...

with open('input.txt', 'r',  encoding='cp1251') as inputFile:
    words = inputFile.readline()
print(words)

with open('input.txt', 'r',  encoding='cp1251') as inputFile:
TypeError: 'encoding' is an invalid keyword argument for this function

Traceback (most recent call last):
  File "E:/Users/DartLenin/PycharmProjects/test/practice.py", line 4, in <module>
    words = inputFile.readline()
  File "E:\Python33\lib\encodings\cp1251.py", line 23, in decode
    return codecs.charmap_decode(input,self.errors,decoding_table)[0]
UnicodeDecodeError: 'charmap' codec can't decode byte 0x98 in position 885: character maps to <undefined>