Python File Read operations

Open and read file from within the Python program as a single string using 'read'

import sys

import os

import string

def file_read(file):

rfile =

print rfile

file = file_read(open('readme.txt', 'r'))

We can also use 

Readlines - as list of strings

Readline - reads only a single line

Read file from command line

Command line arguments lists as string with ‘sys.argv’

import sys

import os

import string

def file_read(file):

rfile =

print rfile

if len(sys.argv) == 1:



file_read(open(sys.argv[1], 'r'))

LTE - 4G Wireless Technology

Digital fundamentals.

Interview Questions.

Following list of programs are discussed in this sec:

¶ File Operations: 

  1. Open and read file from within the python program as a single string. Command line arguments lists as string with ‘sys.argv’.
  2. Use of  glob module in Python code . Read file using classes, global variables and functions. Program to open and write file.
  3. Specify files to be written from the command line. File writes using classes and global variables

¶ Program to read file, filter text, conversion to HEX, conversion from Hexadecimal to Signed Magnitude.S Steps for conditional statements, converting string to hexadecimalvalue, strip of white space at end, converting 12 bit hexadecimal values to 12 bit signed values.

¶ Advanced python code to cover UNIX shell commands, read lines from a text file, ‘sysargv’ command line operations, use of class and multiple functions. 

¶ Write a program to generate diamond pattern.

¶ Implement Python function calls to different classes.

¶ Python read binary files, use of struct.unpack.

¶ Python error’s with complete code examples:-

  1. TypeError: __init__() takes exactly 2 arguments (1 given),
  2. TypeError: 'str' object is not callable, TypeError: not all arguments converted during string formatting,
  3. AttributeError: ** instance has no attribute **




Verilog Tutorial.

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Memory Tutorial.

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