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Python str()

The str() is a built-in python function that converts a given value into a string.

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Python str()
Python str()
By khushal jethava
1 min read
Python str()

The syntax of str() is:

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str(object, encoding, errors)

str() Parameters

The str() function takes three parameters as argument:

  • object - Name of the object whose string representation has to be returned. If no object is passed, it will return the empty string.
  • encoding - The encoding type of the given object. Default is UTF-8.
  • errors - Specifies what to do if the decoding fails.

Let’s check some examples of str() in python.

Example 1: How to use str() function in python?

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# Empty string
s = str()
print(s)

# String with values
s = str("Python")
print(s)

Output:

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Python

Example 2 : How to use str() with encoding and error parameter?

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# bytes
b = bytes('pythön', encoding='utf-8')

print(str(b, encoding='ascii', errors='ignore'))

Output:

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pythn

Here, the character ‘ö’ cannot be decoded by ASCII. Hence, it should give an error. However, we have set the errors =‘ignore’. Hence, Python ignores the character which cannot be decoded by str().

Types of errors in str()

There are total six types of errors:

  • strict - It will raise a UnicodeDecodeError exception on failure. It will be the default error type.
  • ignore - it will ignore the unencodable Unicode from the result.
  • replace - replaces the unencodable Unicode to a question mark.
  • xmlcharrefreplace - It inserts XML character reference instead of the unencodable Unicode.
  • backslashreplace - inserts a \uNNNN espace sequence instead of unencodable Unicode.
  • namereplace - inserts a \N{…} escape sequence instead of unencodable Unicode.

Rules of str()

  • Empty string can be created using str() with no parameters.
  • str() function will return a simple printable representation of the given object.
Built in reference
Built in reference
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