I have an input string like:-
a=1|b=2|c=3|d=4|e=5 and so on...
What I would like to do is extract d=4 part from a very long string of similar pattern.Is there any way to get a substring based on starting point delimter and ending point delimiter?
Such that, I can start from 'd=' and search till '|' to extract its value.Any insights would be welcome.
You can use regex here :
>>> data = 'a=1|b=2|c=3|d=4|e=5'
>>> var = 'd'
>>> output = re.search('(?is)('+ var +'=[0-9]*)\|',data).group(1)
>>> print(output)
'd=4'
Or you can also use split which is more recommended option :
>>> data = 'a=1|b=2|c=3|d=4|e=5'
>>> output = data.split('|')
>>> print(output[3])
'd=4'
Or you can use dic also :
>>> data = 'a=1|b=2|c=3|d=4|e=5'
>>> output = dict(i.split('=') for i in data.split('|'))
{'a': '1', 'b': '2', 'c': '3', 'd': '4', 'e': '5'}
>>> output ['d']
'4'
i[0]:i[2] won't work for substrings like 'foo=123'.
split on = twice, that's why I used a for loop for the dictionary that stores the integers,dict() to achieve the same, should I ?dict constructor takes an iterable of 2-element tuples, and split on = will produce these tuples.Construct a dictionary!
>>> s = 'a=1|b=2|c=3|d=4|e=5'
>>> dic = dict(sub.split('=') for sub in s.split('|'))
>>> dic['d']
'4'
If you want to store the integer values, use a for loop:
>>> s = 'a=1|b=2|c=3|d=4|e=5'
>>> dic = {}
>>> for sub in s.split('|'):
... name, val = sub.split('=')
... dic[name] = int(val)
...
>>> dic['d']
4
You Can try this "startswith" , specific which variable you want the value
string = " a=1|b=2|c=3|d=4|e=5 "
array = string.split("|")
for word in array:
if word.startswith("d"):
print word
