Remove b python – How to Remove ‘b’ in front of String in Python?

Remove b python: If you’re experienced with Python, you’re probably aware of the many Python data types, such as strings and bytes.
You may have come across strings containing “b” as a prefix while programming. What is the significance of the b in front of the string? What does it represent, and why is it used? Furthermore, how do you get removed of it?

‘b’ in front of String:

b before string python: The ‘b’ notations before a string are used to indicate that it is a byte string. A byte string is an array of bytes made up of integers ranging from 0 to 255. A character string, on the other hand, is merely a sequence of characters.

The b prefix is frequently ignored in Python versions 2 and below. In version 3, however, the same instantiates/specifies a byte object rather than an ordinary string object.

Example

# Give the first string as static input and store it in a variable.
gvn_fststr = 'Hello Btechgeeks' 
# Print the datatype of the given first string using the type() function
# by passing the first string as an argument to it.
print("The datatype of the given first string:")
print(type(gvn_fststr))  
# Give the second string as static input and store it in a variable.
gvn_scndstr = b'Hello Btechgeeks' 
# Print the datatype of the given second string using the type() function
# by passing the second string as an argument to it.
print("The datatype of the given second string:")
print(type(gvn_scndstr))

Output:

The datatype of the given first string:
<class 'str'>
The datatype of the given second string:
<class 'bytes'>

Here both the strings are the same, but their datatypes differ.

encode() function:

Remove.b: Here’s another example where we take a character string as input and convert it to a byte string.

# Give the string as static input and store it in a variable.
gvn_str = 'Hello Btechgeeks' 
# Convert the given character string into a byte string using the
# encode() function and print it. 
print(gvn_str.encode())

Output:

b'Hello Btechgeeks'

How to Remove ‘b’ in front of String in Python?

Python b in front of string: There are several methods to remove ‘b’ i.e, convert a byte string to a character string. Some of them are:

Method #1: Using decode() function

B in front of string python: The decode() function is used to remove a string’s prefix b. The function converts from the encoding scheme in which the argument string is encoded to the desired encoding scheme, removing the b prefix.

Approach:

  • Give the string as static input and store it in a variable.
  • Print the datatype of the given string using the type() function by passing the given string as an argument to it.
  • Apply the decode() function on the given first string to get the character string by removing the prefix ‘b’ of a string.
  • Print the above-obtained character string
  • Print the datatype of the above string using the type() function by passing the string as an argument to it.
  • The Exit of the Program.

Below is the implementation:

# Give the string as static input and store it in a variable.
gvn_str = b'Hello Btechgeeks' 
# Print the datatype of the given string using the type() function
# by passing the given string as an argument to it.
print("The datatype of the given string:")
print(type(gvn_str))  
print()
# Apply decode() function on the given first string to get the character string
# by removing the prefix 'b' of a string
charactr_str = gvn_str.decode()
# Print the above obtained character string
print("The obtained character string = ", charactr_str)
print()
# Print the datatype of the above string using the type() function
# by passing the string as an argument to it.
print("The datatype of the string after applying decode() function:")
print(type(charactr_str))

Output:

The datatype of the given string:
<class 'bytes'>

The obtained character string = Hello Btechgeeks

The datatype of the string after applying decode() function:
<class 'str'>

Method #2: Using str() function

Python \b: The str() function gives the string version of the object.

Approach:

  • Give the string as static input and store it in a variable.
  • Print the datatype of the given string using the type() function by passing the given string as an argument to it.
  • Pass the given string, ‘UTF-8’ as arguments to the str() function to convert it into a string
  • Print the above-obtained character string
  • Print the datatype of the above string using the type() function by passing the string as an argument to it.
  • The Exit of the Program.

Below is the implementation:

# Give the string as static input and store it in a variable.
gvn_str = b'Hello Btechgeeks' 
# Print the datatype of the given string using the type() function
# by passing the given string as an argument to it.
print("The datatype of the given string:")
print(type(gvn_str))  
print()

# Pass the given string, 'UTF-8' as arguments to the str() function
# to convert it into a string
charactr_str = str(gvn_str, 'UTF-8')
# Print the above obtained character string
print("The obtained character string = ", charactr_str)
print()

# Print the datatype of the above string using the type() function
# by passing the string as an argument to it.
print("The datatype of the string after applying str() function:")
print(type(charactr_str))

Output:

The datatype of the given string:
<class 'bytes'>

The obtained character string = Hello Btechgeeks

The datatype of the string after applying str() function:
<class 'str'>

Method #3: Using codecs module

\b python: The codecs. decode() method converts a binary string to its normal form.

Approach:

  • Import codecs module using the import keyword.
  • Give the string as static input and store it in a variable.
  • Print the datatype of the given string using the type() function by passing the given string as an argument to it.
  • Pass the given string as an argument to the decode() function of the codecs module to convert the given binary string to a normal string.
  • Here it removes the prefix ‘b’ of a string
  • Print the above-obtained character string
  • Print the datatype of the above string using the type() function by passing the string as an argument to it.
  • The Exit of the Program.

Below is the implementation:

# Import codecs module using the import keyword.
import codecs
# Give the string as static input and store it in a variable.
gvn_str = b'Hello Btechgeeks' 
# Print the datatype of the given string using the type() function
# by passing the given string as an argument to it.
print("The datatype of the given string:")
print(type(gvn_str))  
print()
# Pass the given string as an argument to the decode() function of the codecs module 
# to convert the given binary string to normal string.
# Here it removes the prefix 'b' of a string
charactr_str = codecs.decode(gvn_str)
# Print the above obtained character string
print("The obtained character string = ", charactr_str)
print()
# Print the datatype of the above string using the type() function
# by passing the string as an argument to it.
print("The datatype of the string after applying codecs.decode() function:")
print(type(charactr_str))

Output:

The datatype of the given string:
<class 'bytes'>

The obtained character string = Hello Btechgeeks

The datatype of the string after applying codecs.decode() function:
<class 'str'>

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