File Handling:
==============
close the file:
===============
close():
=======
Syntax:
	file-pointer.close()

Properties of File object/file pointer:
=======================================
1) getting of file name
========================
name: (property)
=====
file-object.name

2) getting of the file mode:
============================
mode: (property)
=====
file-object.mode

3) check whether the file is readable or not?
=============================================
readable()
===========
Syntax:
	file-object.readable() ==> True/False

4) check whether the file is writeable or not?
==============================================
writeable()
===========
file-object.writeable() ==> True/False

5) is file closed?
==================
closed: (property)
======
file-pointer.closed ==> True/False

# file Object Properties

fp = open("ravi.txt","r")

print("Name of the file = ",fp.name)
print("Mode of the file = ",fp.mode)
print("Is file readable? = ",fp.readable())
print("Is file writeable? = ",fp.writable())

print("Is file closed? = ",fp.closed)

# closing the file
fp.close()

print("Is file closed? = ",fp.closed)


===============================================================

File Operations:
================
Writing the data into files:
============================
1) write():
==========
==> we can write string of data into a file (within the line).
Syntax:
	file-object.write(string-data)

# writing operations

# fp = open("ravi.txt","w")
# fp1 = open("ravi.txt","w+")
# fp = open("a.txt","x")
# fp = open("a.txt","r")
fp = open("a.txt","a")
"""
to write data into file:
    we can use: "w-mode", "w+-mode", "r+-mode", "a-mode", "a+-mode","x-mode"
"""

# writing of data into file when it is in w-mode

# fp.write("Python\t")
# fp.write("Object\t")
# fp.write("Oriented\t")
# fp.write("Programming\t")
# fp.write("Language")
fp.write("Hello")

# closing the file
fp.close()

=======================
writelines()
============
==> is used to write the data into multiple lines of the file.
Syntax:
	file-object.writelines(list of lines of content)

# writing operation using writelines()

fp = open("c.txt","x")

ld = ["Python\n","Object\n","Oriented\n","Programming\n","Language\n"]

# fp.write(ld)
# fp.write(ld[0])

fp.writelines(ld)

fp.close()

=============================================

Reading of data from the file:
==============================
four possible ways:
	1) read()
	2) read(n)
	3) readline()
	4) readlines()

1) read():
=========
==> used to read the total data from the file.
Syntax:
	file-pointer.read()

#   reading with read()

fp = open("ravi.txt","r")
fp1 = open("a.txt","r+")
fp2 = open("c.txt","a+")

data = fp.read()
data1 = fp1.read()
# data2 = fp2.read()

print(data)
print(data1)
# print(data2)

fp.close()
fp1.close()
# fp2.close()

===================================

2) read(n):
===========
==> used to read the data from the file upto 'n' characters.
Syntax:
	file-pointer.read(n)

fp = open("c.txt","r")

# data = fp.read(10)
data = fp.read(20)

print(data)

fp.close()

========================================

3) readline():
==============
used to read the data of only one line at a time.
Syntax:
	file-object.realine()

fp = open("c.txt","r")

data = fp.read(10)
data = fp.read(20)
data1 = fp.readline()
data2 = fp.readline()

print(data)
print(data1)
print(data2)

for i in range(5):
    fp.readline()


fp.close()

=======================================

readlines()
==========
==> to read all the lines of file ==> we can use "readlines()".

Syntax:
	file-pointer.readlines()

fp = open("c.txt","r")

data = fp.readlines()

print(data)

for i in data:
    print(i)

==========================================
with statement:
===============
==> with is the keyword
==> while opening the file, with is used.
	to define the block of operations on the file.

Syntax:
	with open("file.txt","mode") as file-object:
		block of operations

# with statement

with open("c.txt","a") as fp:
    fp.write("Hi\n")
    fp.write("Hello\n")
    fp.write("Good Morning.")
    print("Is file closed? = ",fp.closed)
    print("Is file readable? = ",fp.readable())
    fp.close()
print("Is file closed? = ",fp.closed)