您只需：delim = '...'

text = '''This is single line.

This is second long line

... continue from previous line.

This third single line.

'''

# here we're building a list containing each line

# we'll clean up the leading and trailing whitespace

# by mapping Python's `str.strip` method onto each

# line

# this gives us:

#

# ['This is single line.', 'This is second long line',

# '... continue from previous line.', 'This third single line.', '']

cleaned_lines = map(str.strip, text.split('\n'))

# next, we'll join our cleaned string on newlines, so we'll get back

# the original string without excess whitespace

# this gives us:

#

# This is single line.

# This is second long line

# ... continue from previous line.

# This third single line.

cleaned_str = '\n'.join(cleaned_lines)

# now, we'll split on our delimiter '...'

# this gives us:

#

# ['This is single line.\nThis is second long line\n',

# ' continue from previous line.\nThis third single line.\n']

split_str = cleaned_str.split(delim)

# lastly, we'll now strip off trailing whitespace (which includes)

# newlines. Then, we'll join our list together on an empty string

new_str = ''.join(map(str.rstrip, split_str))

print new_str

哪些输出

^{pr2}$