Python common error messages - TypeError-str

TypeError: 'str' object is not callable
Lets run a program to generate the error

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 ():
# Read elemant 4 of the table array by calling class
   y = tables(0x4)

Traceback (most recent call last):
 File "", line 28, in ?
 File "", line 26, in main
   y = tables(0x4)
 File "", line 12, in __init__
   print "Result = %s"  (ans)
TypeError: 'str' object is not callable

        print "Result = %s"  (ans)
        Instead of
       print "Result = %s" % (ans)

LTE - 4G Wireless Technology

Digital fundamentals.

Interview Questions.

Following list of programs are discussed in this sec:

¶ File Operations: 


Verilog Tutorial.

LTE Tutorial.

Memory Tutorial.

  • Open and read file from within the python program as a single string. Command line arguments lists as string with ‘sys.argv’.
  • Use of  glob module in Python code . Read file using classes, global variables and functions. Program to open and write file.
  • ¶ 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. 

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