Python convert character to string

How To Convert Python Unicode Characters To String | Python

In this tutorial let’s learn about How To Convert Python Unicode Characters To String in Python. This article shows how to translate Unicode characters into an ASCII string. The purpose is to either eliminate non-ASCII characters or replace Unicode characters with their corresponding ASCII ones.

Unicode Characters in Python

Unicode Characters is the universal character encoding standard for all languages. Unlike ASCII, which only allows for a single byte per character, Unicode characters allow for four bytes, allowing for more characters in any language.

Unicode strings can be encoded in plain strings to any encoding you like. The abstract object large enough to carry the character in Python Unicode character is equivalent to Python’s long integers. If the string simply contains ASCII characters, transform it to a string using the str() method.

encode() and decode() Methods in Python

If you have a Unicode string and need to write it to a file or another serialised form, you must first encode it into a saveable format. There are many popular Unicode encodings, such as UTF-16 (which requires two bytes for most Unicode characters) or UTF-8, and others.

You can use the following code to convert that string to a certain encoding.

The above output is bytes datatype.

Use the decode() function to convert bytes to strings in python.

Convert Python Unicode Characters To String

Use the unicodedata.normalize() method to convert Python Unicode to string. Based on canonical equivalence and compatibility equivalence, the Unicode standard offers multiple normalisation forms of a Unicode string.

unicodedata.normalize() to Convert Unicode to ASCII String in Python

The Python module unicodedata provides a method to use the Unicode character database as well as utility functions that make accessing, filtering, and looking up these characters more easier.

normalize() is a function in unicodedata that accepts two parameters: the normalized form of the Unicode string and the provided string. Normalized Unicode forms are classified into four types: NFC, NFKC, NFD, and NFKD. The NFKD normalized form will be used in this article.

b’Kluft infor pa federal electoral groe’

Because the encode() method is used on the string, the b symbol at the beginning indicates that it is a byte literal. To remove the symbol and the single quotes that enclose the string, call decode() after calling encode() to re-convert it to a string literal.

You can see in the result that we got the encoded bytes string, which we can now decode to get a Python string using the string decode() function.

Kluft infor pa federal electoral groe

Let’s attempt another example where the replace argument is used as the second parameter in the encode() function.

The replace argument substitutes all characters that do not have ASCII equivalents with a question mark? symbol. If we used ignore on the same string the output will be:

Conclusion

To convert Unicode characters to ASCII characters, use the unicodedata module’s normalize() function and the string’s built-in encode() function. Unicode characters that do not have ASCII counterparts can be ignored or replaced. The ignore option removes the character, while the replace option replaces it with question marks.

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How to convert char to string in Python

The easiest method is to create a empty string, iterate the char and add char items to the string.

char = ['m', 'y', 'c', 'h', 'a', 'r'] def charToString(char): string = "" for x in char: string += x return string print(charToString(char))

Alternative method

There is an other method. You can use join function to join char into string.

i = ['m', 'y', 'c', 'h', 'a', 'r'] def chartostring(i): string = "" return string.join(i) print(chartostring(i))

As you may notice .join() function is making chars a one string.

Similarly you are able to do the same by .tostring() function. You may think this looks uglier but in fact tostring() is faster than .join() in this case.

Keeping performance in mind this method is recommended. Hope now you know how to convert char to string with Python.

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3 Proven Ways to Convert ASCII to String in Python

In python, we have discussed many concepts and conversions. But sometimes, we come to a situation where we need to convert ASCII into string in python. In this tutorial, we will be discussing how to convert ASCII into strings in python. As the conversion of elements has been a handy utility as it offers it in a much simpler way than other languages.

What are ASCII Values?

ASCII stands for American Standard Code for Information Interchange. It is a character encoding that uses numeric codes to represent characters from 0 to 127. These include upper and lowercase English letters, numbers, and punctuation symbols. For example, the ASCII code for character A is 65, and Z is 90.

Ways to convert ASCII into string in python

Here, we will be discussing all the different ways through which we can convert ASCII into string in python:

1. Using chr() function to convert ASCII into string

In this example, we will be using the chr() function with ASCII value as a parameter to function. We will be taking an input list with some integer values. After that, we will be using the chr() function, which will convert the ASCII values into integers. At last, we will print the resultant string. Let us look at the example for understanding the concept in detail.

# Input list lst = [80, 121, 116, 104, 111, 110, 80, 111, 111, 108] # Printing initial list print ("Input list", lst) # Using chr() Method res = "" for i in lst: res = res + chr(i) print ("String : ", str(res))

Explanation:

• Firstly, we will be taking an input list with some ASCII values.
• Then, we will be printing the input list.
• Then, we will be taking an empty string res.
• After that, we will apply for loop till the length of string, and inside it, we will be using the chr() function to convert ASCII value into character value.
• At last, we will print the Final string.
• Hence, you can see the ASCII values get converted into a string.

2. Using join and list comprehension to convert ASCII into string

In this example, we will be using join and list comprehension with the help of the chr() function to convert each ASCII value to its corresponding character. join(iterable) method with str as «» to concatenate each character in iterable into a single string. At last, we will print the final string. Let us look at the example for understanding the concept in detail.

# Input list lst = [80, 121, 116, 104, 111, 110, 80, 111, 111, 108] # Printing input list print ("Initial list : ", lst) # Using list comprehension and join res = ''.join(chr(i) for i in lst) print ("Final string : ", str(res))

Explanation:

• Firstly, we will be taking an input list with some ASCII values.
• Then, we will be printing the input list.
• After that, we will be taking a variable ‘res’ to apply the join() method.
• Inside the join() method, We have used list comprehension, which will convert the ASCII into the string.
• At last, we will print the Final string.
• Hence, you can see the ASCII values get converted into strings.

3. Using map() function to convert ASCII into string

In this example, we will be using the map() function and join() method to convert each ASCII value to its corresponding character. join(iterable) method with str as » » to concatenate each character in iterable into a single string. At last, we will print the final string. Let us look at the example for understanding the concept in detail.

# Input list lst = [80, 121, 116, 104, 111, 110, 80, 111, 111, 108] # Printing input list print ("Initial list : ", lst) # Using map and join res = ''.join(map(chr, lst)) print ("Final string : ", str(res))

Explanation:

• Firstly, we will be taking an input list with some ASCII values.
• Then, we will be printing the input list.
• After that, we will be taking a variable ‘res’ to apply the join() method.
• Inside the join() method, we have used the map() function through which ASCII values get converted into strings.
• At last, we will print the Final string.
• Hence, you can see the ASCII values get converted into strings.

Conclusion

In this tutorial, we have learned about the concept of conversion of ASCII into string in python. We have also discussed what ASCII values are? Then, we have discussed all the different ways with the help of an example through which we can convert ASCII values into strings in python. All the ways are explained in detail with the help of examples. You can use any of the functions according to your choice and your requirement in the program.

However, if you have any doubts or questions, do let me know in the comment section below. I will try to help you as soon as possible.

FAQs

1. How to check if a string in Python is in ASCII?

We can check if the string in python is ASCII or not with the help of the following code:

def is_ascii(s): return all(ord(c) < 128 for c in s)

In this, s is the string through which you can check if the python string is ASCII or not. You can write any of the strings and run the program. It will give you the output in True or False.

2. Are python strings ASCII?

Python strings have no property corresponding to ‘ASCII’ or any other encoding. The input of your string (whether you read it from a file, input from a keyboard, etc.) may have encoded a Unicode string in ASCII to produce your string. In case you want to remove all the Unicode characters from the string in python. You can read our in-depth article from here.

3. What does chr() do in Python?

The chr() function in python inputs as an integer, a Unicode code point, and converts that into a string representing a character. This function is used to return a string with length 1, representing the character whose Unicode code point value is passed in the chr() function.

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