Conversion to a string with the backtick operator

String Handling example from a Well House Consultants training course
More on String Handling [link]

Source code: backtick Module: Y108

""" The backtick in python is an operator that converts
the expression contained into a string. This is NOT the
same thing as the backtick does in Perl or Shell programming"""

# Python 2 only - the backtic is deprecated ... and gone in Python 3!

def myfunc ():
   # This function just provides an object for the demo
   return 42

# "a" is an object of type int ...

a = myfunc()
print a,a.__class__

# ... but "b" is an object of type str
b = `myfunc()`
print b,b.__class__

# "c" is also an object of type str
# Even though (printed out) it looks like a code object
c = `myfunc`
print c,c.__class__

# This works as the backticks convert 20 to a string ...
twenty = 10 + 10
sentence = "The result is "+`twenty`
print sentence

# ... but this gives a run time error
twenty = 10 + 10
sentence = "The result is "+twenty
print sentence

""" Sample output

WomanWithCat:y108 grahamellis$ python2 backtick
42 <type 'int'>
42 <type 'str'>
<function myfunc at 0x10c57eb18> <type 'str'>
The result is 20
Traceback (most recent call last):
  File "backtick", line 32, in <module>
    sentence = "The result is "+twenty
TypeError: cannot concatenate 'str' and 'int' objects
WomanWithCat:y108 grahamellis$

"""

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