Python String Manipulation: strip, split, and join with Examples

Day 57 of the learning notes introduces common string extraction, splitting, and merging operations in Python.

strip() removes characters from both ends of a string; by default it removes spaces. Example:

str1 = "today is a nice day"
str2 = "***today is a nice day***"
print(str1.strip())          # today is a nice day
print(str2.strip("*"))       # today is a nice day
print(str2.lstrip("*"))      # today is a nice day***
print(str2.rstrip("*"))      # ***today is a nice day

split() divides a string into a list based on a separator; default separator is any whitespace.

str3 = "this is a string example...."
print(str3.split())
# ['this', 'is', 'a', 'string', 'example....']

print(str3.split("i"))
# ['th', 's a str', 'ng example....']

join() concatenates an iterable of strings using a specified separator.

sep = "-"
tup = ("hello", "every", "body")
print(tup)                # ('hello', 'every', 'body')
print(sep.join(tup))      # hello-every-body

The printed results correspond to the operations described above.