Methods to Append to String in a Loop in Python

Using the += Operator

# Example of using the += operator to append to a string

my_string = ""
for i in range(10):
    my_string += str(i)  # append each character to the string
print(my_string)

Output:

0123456789

Using the join() Method

# Example of using the join() method to append to a string

my_list = []
for i in range(10):
    my_list.append(str(i))  # append each character to the list
my_string = "".join(my_list)  # convert the list to a string
print(my_string)  # Output: "0123456789"

Output:

0123456789

Using a List and str.join() Method

# Example of using a list and join() method to append to a string

my_list = []
for i in range(10):
    my_list.append(str(i))  # append each character to the list
my_string = "".join(my_list)  # convert the list to a string
print(my_string)  # Output: "0123456789"

 Output:

0123456789

Using a List and str.format() Method

# Example of using a list and str.format() method to append to a string

my_string = ""
for i in range(10):
    my_string += "{}".format(i)  # append each character to the string
print(my_string)  # Output: "0123456789"

 Output:

0123456789

Using f-Strings (Formatted String Literals)

# Example of using f-Strings to append to a string

my_string = ""
for i in range(10):
    my_string += f"{i}"  # append each character to the string
print(my_string)  # Output: "0123456789"

 Output:

0123456789