This tutorial is about How to Use tostring() Equivalent in Python. There activity, or event around world is generating a real-time data at every instance, and each data is consist of different data-types, and when computing, there is a need to convert different data types into another required data-type. This page coveres various other Python functions such as str and format etc, all of which can also be used for converting data from one format to a string. However, tostring() is a built-in function in C++ or java, and is the standard way to return a string data type. Python does have a tostring() method. Moreover, it also provides other methods for performing the similar operation. it’s simply named str().
If you want to learn More about Python Programming, Visit Python Programming Tutorials.
*Working on Jupyter Notebook Anaconda Environment
Using a built-in str() for tostring() Equivalent in Python
str() built-in function in python is the equivalent of tostring() in Python. str() is the simplest and convienent approach to convert any data-type to the string data-type. To check the data-type of the variable, type() function determines the data-type of any variable or data structure in Python.
Here in the following example, it executes the tostring() equivalent operation in Python using str() function.
integer = 10
print(("integer: "), integer)
#printing the data type of the integer using type() function
print(type(integer))
#store modified value in string
string = str(integer)
print(("string: "), integer)
print(type(string))
integer: 10
<class 'int'>
string: 10
<class 'str'>
Using built-in format() approach for tostring() Equivalent in Python
When format() is called, the placeholder, indicated by the curly bracket {}, is filled in with a specific value. In this placeholder, we set the value we want to display at the output.
By using format() methods, you can pass in a specific value and place it in the placeholder, which is represented by the curly bracket. As we execute the code, we replace curly braces {} with the value we want to print.
Here in the format() method, we pass two variables as argument within parenthesis. The two arguments that are passed is of integer type, and after format() method we get output as string data-type. An easiest approach to get tostring() equivalent in Python.
# declaring variables
year = 2022
new_year = 2023
print(type(new_year))
# To cast an number/integer into string using format method
string = "It's a year {}, The New year will be {}.".format( year, new_year)
print(string)
print(type(string))
<class 'int'>
It's a year 2022, The New year will be 2023.
<class 'str'>
Using built-in repr() Method for tostring() Equivalent in Python
String representing the printed representation of an object is returned by repr(). Repr() executes this method when the object is invoked. This function returns a string from an object. This function does not actually cast an object to a string, but instead returns a string in printable form. When necessary, the object’s data-type can however be reconstructed again.
Here in the following example, next_year is printed, and after then repr() function is applied. The same repr() object is used to make a Christmas tree of a year 2023. Year 2023 is of string type.
#declaring variables
b= 2023
#applying repr() method
c = repr(b)
#c will now cast as a string
print(c, ' ', type(c))
print('\n')
#now utilizing a string in a making a christmas tree of a new year 2023
#initializing row number
rows = 5
#for column processing
col = (2 * rows) - 2
for i in range(0, rows):
for j in range(0, col):
print(end=" ")
col = col - 1
#nested increment loop for each column
for j in range(0, i + 1):
print("*", end=' ')
#print space
print(" ")
rows = 2
for i in range(0, rows):
for j in range(0, rows):
#check on current column and on row
j==i
print(end=" ")
#multiply current column and on row
print(" ", c * (j))
print(type(b))
print(type(c))
2023 <class 'str'>
*
* *
* * *
* * * *
* * * * *
2023
2023
<class 'int'>
<class 'str'>
As mentioned earlier that the repr() object is reconstructed, here how it is reconstructed.
Repr() returns the original object when passed to eval().
reconstruct_repr=eval(repr(b))
print("reconstruct_repr: ", reconstruct_repr, " ", type(reconstruct_repr))
reconstruct_repr: 2023 <class 'int'>
Using a built-in f-string for tostring() Equivalent in Python
Using F-strings allows us to print variables in strings. The F-string represents formatted strings. We can print a variable by placing it between the curly braces {}, which is a placeholder for string.
Here is the syntax format, the f at the beginning, and the variable within curly brackets.
- The execution process replaces curly brackets {} placeholder with the desired value of “New_Year= 2023’=”.
New_Year= 2023
print(
"Chinese New Year", f'{New_Year}',"animal is the rabbit.", " ", "New_Year Type in string is:", type(f'{New_Year}')
)
print ("original New_Year Type is:", type(New_Year))
Chinese New Year 2023 animal is the rabbit. New_Year Type in string is: <class 'str'>
original New_Year Type is: <class 'int'>
Using Placeholder method
%d placeholder
Python allows us to print numerical or integer values into a string by using the %d placeholder. You write the string that you want to print within the print command and then place a placeholder(%d) into it and close it with commas(‘ ‘), to give justice with python syntax, then use the % operator for string formatting and within square brackets () call a variable you want to cast to string.
New_Year= 2023
print(
"Chinese New Year %d's animal is the rabbit." % (New_Year), " ", "New_Year Type in string is:", type('%d' % New_Year)
)
print ("original New_Year Type is:", type(New_Year))
Chinese New Year 2023's animal is the rabbit. New_Year Type in string is: <class 'str'>
original New_Year Type is: <class 'int'>
%s placeholder
%s placeholder returns a data type of the strings from any variable. The pythonic expression is that within commas command for the print % operator injected and after that the variable of either the same or different data type comes that you want to be displayed as output.
New_Year= 2023
print(
"Chinese New Year %s's animal is the rabbit." % (New_Year), " ", "New_Year Type in string is:", type("%s" % year)
)
print ("original New_Year Type is:", type(New_Year))
Chinese New Year 2023's animal is the rabbit. New_Year Type in string is: <class 'str'>
original New_Year Type is: <class 'int'>
Conclusion
Here on this page, different approaches are demonstrated with example code in Python of the tostring() equivalent. However, according to the problem, it is necessary to cast into string from other data-types. After reading and understanding the methods and examples, now you are able to resolve your problem related to finding tostring() equivalent in Python.
