value = input('Input an integer number: ')
print(type(value)) # str
print(int(value)*100)
		

# open file
'''
1234567
abcdefg
'''
f = open('data.txt', 'rb')

# read line by line
for line in f:
    print(line)

# offset, from
# from, 0, start of the file, 1, current position, 2, end of the file
f.seek(0, 0)

# read line by line with index
for index, line in enumerate(f):
    print(index, line)

# back to starting position
f.seek(0, 0)

# display the current position
print(f.tell(), f.read(2)) # read two characters
print(f.tell(), f.read()) # read to the end

# read line by line
f.seek(0, 0)
try:
    while True:
        print(next(f)) # raise StopIteration when hit EOF
except StopIteration:
    pass

f.seek(0, 0)
# read character by character
while True:
    c = f.read(1)
    if not c:
        break
    print("%10s, %10d" % (c, ord(c)))

# close file
f.close()
		

# open file
f = open('data.txt', 'r')
o = open('temp.txt', 'w')

# read line by line
for index, line in enumerate(f):
    s = '{:10d} {}'.format(index, line)
    o.write(s)

f.close()
o.close()
		

# open file
f = open('data.txt', 'rb')

# file attributes
print(f.closed)
print(f.mode) # rb
print(f.name) # data.txt

# close file
f.close()
		

import sys

try:
    f = open('temp.txt', 'w+')
    f.write('Hello')
except OSError as argument:
    print(argument)
finally:
    if 'f' in locals():
        print('Close the opened file ...')
        f.close()
    else:
        print('Can not close file ...')
		

with open('data.txt', 'rb') as f:
    # read line by line
    for line in f:
        print(line)
		

f = open('data.txt', 'rb', encoding='utf-8')

# close file
f.close()
		

f = open('welcome.txt', 'r', encoding = 'utf-8')
o = open('output.txt', 'w')

for line in f:
    print(type(line)) # str, unicode
    o.write(line)

o.close()
f.close()
		

f = open('welcome.txt', 'rb')
o = open('output.txt', 'wb')

for line in f:
    print(type(line)) # bytes, byte string
    o.write(line)

o.close()
f.close()
		

# i11.py
from inspect import currentframe, getframeinfo

def info():
    frameinfo = getframeinfo(currentframe())
    return frameinfo.filename, frameinfo.lineno
		

import i11

filename, line_index = i11.info()
print(filename, line_index)
		

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