更换新的换行

Question

I'm attempting to write extra text to the first line of this multi-line string using replace , and it doesn't work:

somestr = """For example
("""

print somestr.replace('\\n(', ' you can find')

I'm expecting the following result:

For example you can find
(

Edit

This string comes from a row object:

cursor.execute("SELECT col1 FROM tbl")
row = cursor.fetchone()
somestr = str(row.col1)

The output of pprint.pprint(locals()) gives:

{'somestr': '\n\nFor example\n(\n'}

Answer 1

Don't escape the newline character and it'll work just fine; do include the original text if you want to insert rather than replace:

somestr.replace('\n(', ' you can find\n(')

The original string does not contain the character sequence \\ , n , ( , but your code is trying to replace just that. Instead, there is a newline character followed by ( in that string, and to create the newline character you need to use \\n , not \\\\n .

Demo:

>>> somestr = """For example
... ("""
>>> print somestr.replace('\n(', ' you can find\n(')
For example you can find
(