Python-сообщество

 import sys
for line in sys.stdin:
    print(line)

#!/usr/bin/env python3

i = 0
while True:
    i += 1
    try:
        s = input()
    except EOFError:
        break
    print('line #{:03} {}'.format(i, s))

[guest@localhost py]$ ./t.py < t.py
line #001 #!/usr/bin/env python3
line #002 
line #003 i = 0
line #004 while True:
line #005     i += 1
line #006     try:
line #007         s = input()
line #008     except EOFError:
line #009         break
line #010     print('line #{:03} {}'.format(i, s))
[guest@localhost py]$

 while True:
    try:
        text = input()
    except EOFError:
        break
    else:
        print(text.encode('cp1251'))
python input_from_stdint.py < input_from_stdint.py
b'\xef\xbb\xbfwhile True:'
b'    try:'
b'        text = input()'
b'    except EOFError:'
b'        break'
b'    else:'
b"        print(text.encode('cp1251'))"

 echo (matrix.txt > proga.py)