backquote / backtic operator
Objects - Intermediate example from a Well House Consultants training course
More on Objects - Intermediate [link]
Source code: bq Module: Y112
# backquote / backtic operator - Converts object to string
# Using a regular expression as an example of an object that's not
# normally printed out
ddd = re.compile("Hello")
# Object prints out via __str__; if that not defined, uses __repr__
# __repr__ in base class prints out type and memory address of object
# Now make eee a string representation of ddd (i.e. what would have
# printed out had we called print on it
eee = `ddd`
print eee + '!!'
# but this program will fail in the next line because ddd is an object
# of a type that does not support "+"
print ddd + '!!'
""" Sample output:
munchkin:tlcpy grahamellis$ python bq
<_sre.SRE_Pattern object at 0x102edd540>
<_sre.SRE_Pattern object at 0x102edd540>!!
Traceback (most recent call last):
File "bq", line 23, in <module>
print ddd + '!!'
TypeError: unsupported operand type(s) for +: '_sre.SRE_Pattern' and 'str'
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