string - Python replace different character -


i have different strings these : 

"/table[1]/tr/td[2]/table[2]/tr/td[2]/p/b/text()" "/table[1]/tr/td[2]/table[3]/tr/td[2]/p/b/text()"

i'd change substring "/table[" + number + "]" "/table[" + same number + "]/tbody".

for example string

"/table[1]/tr/td[2]/table[2]/tr/td[2]/p/b/text()"

should change in

"/table[1]/tbody/tr/td[2]/table[2]/tbody/tr/td[2]/p/b/text()"

use symbolic group naming, way:

>>> s '/table[1]/tr/td[2]/table[2]/tr/td[2]/p/b/text()' >>> >>> re.sub(r'(?p<table>/table\[\d+\])', r'\g<table>/tbody', s) '/table[1]/tbody/tr/td[2]/table[2]/tbody/tr/td[2]/p/b/text()' >>> >>> #similarly can reference group number >>> re.sub(r'(?p<table>/table\[\d+\])', r'\g<1>/tbody', s)  '/table[1]/tbody/tr/td[2]/table[2]/tbody/tr/td[2]/p/b/text()'

quoting python doc:

(?p<name>...)
similar regular parentheses, substring matched group accessible via symbolic group name name. group names must valid python identifiers, , each group name must defined once within regular expression. symbolic group numbered group, if group not named.


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