Calling Classes using Main function.

Python call a function from a class using function “main”. So by using this method a function call can be returned outside its class.


# Calling a function from class using main function.
# return a function call outside the class
# Inheritance
# Class objects
import sys
class tables:
    def __init__(self,w):
        # 2.4 Definitions of tables for the FSM
        ans = self.T0_r(w)
        print "Result = %s" % (ans)

    def T0_r(self, w):
        self.w = w
        self.s1_t0_r = self.T0[self.w]
        return self.s1_t0_r

    def tables_ls(self):
        self.T0 = ['0xFF563C6' ,'0x84FF7CF8' ,'0x897788EE' ,'0x8EFB7BF6',
                '0xFE2F2FF ' ,'0xBCAF6BD6' ,'0xAA6F6FDE' ,'0xFFC5C591']

def main ():
    # Calling a class
    # Read 0 elemant of the table array
    y = tables(0x4)


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.

LTE Tutorial.

Memory Tutorial.

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