Text manipulation handbook

Want to Read. Download for print-disabled. Check nearby libraries Library. Share this book Facebook. Last edited by ImportBot. August 1, History. This edition was published in November by Peer Information Inc. Written in English — pages. NET Framework. Paperback in English - 1st edition. Libraries near you: WorldCat. Community Reviews 0 Feedback? Lists containing this Book. To do so, we use the split method in Python.

Notice that, by default, the split method uses any consecutive number of whitespaces as delimiters. We can change the code above to:. When working with data, it's very common to read some CSV files to extract information from them. In this example, we are going to use the split method passing as argument a specific delimiter, ";" in this case. If you want to truly remove any space in a string, leaving only the characters, the best solution is to use a regular expression.

The original variable phrase remains the same. As you can see, the result is not the same. Use the title method to transform the first letter in each word into upper case and the rest of characters into lower case. Use the swapcase method to transform the upper case characters into lower case and vice versa. The pythonic way to check if a string is empty is using the not operator. Notice the spaces in the second string.

The word 'beach' has 5 characters, which gives us 27 spaces to fill with empty space. The rjust also accepts a specific char as a parameter to fill the remaining space. The ljust also accepts a specific char as a parameter to fill the remaining space. Use the isalnum method to check if a string only contains alphanumeric characters. Notice that in the first 4 examples, each character takes some space, even if it is an empty space as you can see in the first example. Some of these 'invisible' characters may mess up your printing, giving you an unxpected output, even when everything 'looks' alright.

Use the isspace method to check if the characters in a string are all white spaces. You can also set if you want to begin the match in a specific position and end it in another specific position of the string.

Finally, you might want to check for multiple strings at once. Instead of using some kind of loop, you can use a tuple as an argument with all the strings you want to match against. Use the capitalize method to convert to upper case only the first character in a string.

Notice that any character counts, such as a number or a special character. So in the last example, 3 is the first character and suffers no alterations while the rest of the string is converted to lower case. Use the isupper method to check if the characters in a string are all in upper case.

Since the join method only accepts strings, if any element in the iterable is of a different type, an error will be thrown. Since the set is also the same as the tuple and the list, I've used a different separator in this example. The dictionary has a catch when you use the join method: it joins the keys, not the values. If you want to keep the line break, the splitlines accepts a parameter that can be set to True , the default is False.

Use the islower method to check if the characters in a string are all in lower case. Numerics include numbers from 0 to 9 and combinations of them, Roman numerals, superscripts, subscripts, fractions, and other variations.

Use the isdecimal method to check if a string only contains decimals, that is, only numbers from 0 to 9 and combinations of these numbers. Subscripts, superscripts, Roman numerals, and other variations will be returned as False. Use the istitle method to check if the first character in every word in a string is upper case and the other characters are lower case. Additional Product Features Copyright Date.

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