In this article, we will discuss several ways to append one string to another in Python. String is a set of characters similar to C,C++ and other programming languages.
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1. Quick Examples of String append
# Consider the two strings
string1 = 'Welcome to'
print("One: ",string1)
string2 = 'Sparkby tutorials!'
print("Two: ",string2)
# Append string2 to string1 using + operator
print("Using + operator:",string1+string2)
# Append string2 to string1 using += operator
string1+=string2
print("Using += operator:",string1)
# Append string2 to string1 using join()
print("Using join():","".join([string1,string2]))
# Append string2 to string1 using join()
print("Using join() with - separator:","-".join([string1,string2]))
# Append string2 to string1 using format()
print("Using format(): ","{} {}".format(string1,string2))
# Append string2 to string1 using f-strings
print(f"Using f-strings: {string1} {string2}")
# Append string2 to string1 using __add__
print("Using __add__:",string1.__add__(string2))
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2. String append using + operator
In this scenario, we will append second string to first by joining two strings using + operator. This operator concatenated two strings and return the concatenated string.
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2.1 Syntax of string + operator
The following is the syntax of the String + operator.
string1+string2
# Where string1 is the first string and string2 is the second string.
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2.2 Example of string + operator
Let's create two strings and append second string to first in a print() statement using + operator.
# Consider the two strings
string1 = 'Welcome to'
print("One: ",string1)
string2 = 'Sparkby tutorials!'
print("Two: ",string2)
# Append string2 to string1 using + operator
print("Using + operator:",string1+string2)
# Append string2 to string1 using + operator with space
print("Using + operator:",string1+" "+string2)
# Output:
# One: Welcome to
# Two: Sparkby tutorials!
# Using + operator: Welcome toSparkby tutorials!
# Using + operator: Welcome to Sparkby tutorials!
Explanation:
-
In second output, we can see that string2 is append to string1 with out any space.
-
In last output, We can see that string2 is appended to a space and space is appended to string1.
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3. String append using += operator
In this scenario, we will append second string to first using += operator. So the final string is stored in the first string.
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3.1 Syntax of string += operator
The following is the syntax of the String += operator.
string1+=string2
# Where string1 is the first string and string2 is the second string.
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3.2 Example of string += operator
Let's create two strings and append second string to first string using += operator.
# Consider the two strings
string1 = 'Welcome to'
print("One: ",string1)
string2 = 'Sparkby tutorials!'
print("Two: ",string2)
# Append string2 to string1 using += operator
string1+=string2
print("Using += operator:",string1)
# Output:
# One: Welcome to
# Two: Sparkby tutorials!
# Using += operator: Welcome toSparkby tutorials!
Explanation:
- So we are appending second string to first using += operator and after printing the first string, we can see that second string is appended to it.
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4. String append using join() method
In this scenario, we will append second string to first using the join() method. This method joins both the strings by a separator. here we need to pass a list as a parameter that takes two strings.
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4.1 Syntax of string join() method
The following is the syntax of the String join() method.
"separator".join([string1,string2])
# Where string1 is the first string and string2 is the second string.
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4.2 String join() method Parameters
It takes list of strings to be joined.
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4.3 Example of string join() method.
Let's create two strings and append second string to first string with and without separator using join() method.
# Consider the two strings
string1 = 'Welcome to'
print("One: ",string1)
string2 = 'Sparkby tutorials!'
print("Two: ",string2)
# Append string2 to string1 using join()
print("Using join():","".join([string1,string2]))
# Append string2 to string1 using join()
print("Using join() with - separator:","-".join([string1,string2]))
# Output:
# One: Welcome to
# Two: Sparkby tutorials!
# Using join(): Welcome toSparkby tutorials!
# Using join() with - separator: Welcome to-Sparkby tutorials!
Explanation:
-
In second output, we didn't specified the separator in join() method, so second string is appended to first without any separator.
-
In last output, we specified "-" as the separator in join() method, so second string is appended to first separated by "-".
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5. String append using format()
In this scenario, we will join the strings using format() method. It is represented by {}. So by placing two {} each other, we will append second string to the first string.
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5.1 Syntax of string format() method
The following is the syntax of the String format() method.
"{} {}".format(string1,string2)
# Where string1 is the first string and string2 is the second string.
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5.2 Example of string format()
Let's create two strings and append second string to first string using format().
# Consider the two strings
string1 = 'Welcome to'
print("One: ",string1)
string2 = 'Sparkby tutorials!'
print("Two: ",string2)
# Append string2 to string1 using format()
print("Using format(): ","{} {}".format(string1,string2))
# Output:
# One: Welcome to
# Two: Sparkby tutorials!
# Using format(): Welcome to Sparkby tutorials!
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6. String append using f-strings
In this scenario, we will join the strings using f-strings. It is similar to format(). We need to specify first string and after second string inside {}.
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6.1 Syntax of string f-strings
The following is the syntax of the String f-strings.
f"{string1} {string2}"
# Where string1 is the first string and string2 is the second string.
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6.2 Example of string f-strings.
Let's create two strings and append second string to first string using f-strings.
# Consider the two strings
string1 = 'Welcome to'
print("One: ",string1)
string2 = 'Sparkby tutorials!'
print("Two: ",string2)
# Append string2 to string1 using f-strings
print(f"{string1} {string2}")
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7. String append using add()
In this scenario, we will join the strings using add() method. It is an instance method.
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7.1 Syntax of string add()
The following is the syntax of the String add_()
string1.__add__(string2)
# Where string1 is the first string and string2 is the second string.
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7.2 Example of string - add().
Let's create two strings and append second string to first string using add().
# Consider the two strings
string1 = 'Welcome to'
print("One: ",string1)
string2 = 'Sparkby tutorials!'
print("Two: ",string2)
# Append string2 to string1 using __add__
print("Using __add__:",string1.__add__(string2))
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8. Conclusion
In this article, we seen how to append string with 7 scenarios. In all the scenarios, no module is required. Based on your requirement, You can use any of the method.
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