How do I select random text on screen-CodePudding

How do I select the random text that is after a fixed text using Python? For Example "AWB NO 56454546" where "AWB NO" is fixed text while "56454546" is random text. enter image description here

CodePudding user response：

You can use the partition method for this. It's part of the built-in str type.

>>> help(str.partition)

partition(self, sep, /)
    Partition the string into three parts using the given separator.

    This will search for the separator in the string.  If the separator is found,
    returns a 3-tuple containing the part before the separator, the separator
    itself, and the part after it.

    If the separator is not found, returns a 3-tuple containing the original string
    and two empty strings.

If you use "AWB No: " as the separator, you'll get back a 3-tuple containing:

everything before "AWB No: " e.g. "Courier "
the separator: "AWB No: "
everything after "AWB No: ": "56454546"

So you can get that "everything after" part in two ways:

input_str = "Courier AWB No: 56454546"
sep = "AWB No: "
before, sep, after = input_str.partition(sep)
# == "Courier ", "AWB No: ", "56454546"

# or
after = input_str.partition(sep)[2]

# either way: after == "56454546"

If there are more words after the number you can get rid of them with .split()[0]:

input_str = "Courier AWB No: 56454546 correct horse battery staple"
sep = "AWB No: "
after = input_str.partition(sep)[2]
awb_no = after.split()[0]

# after == "56454546"

Or in one line:

input_str = "Courier AWB No: 56454546 correct horse battery staple"
awb_no = input_str.partition("AWB No: ")[2].split()[0]