Question
What does re.sub(r'(\w+)', r'_\1_', 'hello world')
return?Solution
The re.sub() function replaces occurrences of a pattern. Here, (\w+) captures each word. In the replacement string r'_\1_', \1 refers to the content of the first (and only) capturing group. Thus, each word is wrapped with underscores.
The monocotyledonous plants can be distinguished from dicotyledonous plants by:
Which of the following is not a stem modification?
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