How to replace a sub-string, say words that start with capital letters, with the length of that sub-string, perhaps using regex.
For example:
Using the regex "\b[A-Z]+[a-z]*\b"
"He got to go to New York"
Should be transformed into this:
"2 got to go to 3 4"
The actual scenario that I am using this in is a bit different, but I thought that scenario is more clear.
You can use re.sub for this which accepts a callable. That callable is called with match object each time a non-overlapping occurrence of pattern is found.
>>> s = "He got to go to New York"
>>> re.sub(r'\b([A-Z][a-z]*)\b', lambda m: str(len(m.group(1))), s)
'2 got to go to 3 4'
This is not as succinct, but in case you want to avoid regular expressions and lambda's you can write something like this:
string = "He got to go to New York"
string = string.split()
for word in range(len(string)):
if string[word][0].isupper():
string[word] = str(len(string[word]))
print(" ".join(string))
He got to New York, the most .. city.