Cannot concatenate object of type ‘‘; only series and dataframe objs are valid

Error: cannot concatenate object of type ‘<class ‘str’>’; only series and dataframe objs are valid.

Explanation:

This error occurs when you try to concatenate (combine) a string object with a non-string object, such as an integer or float.

In Python, you can concatenate strings using the ‘+’ operator. However, you cannot concatenate a string with other types directly.

Here’s an example:

    
# Example 1
string_variable = "Hello"
int_variable = 42
result = string_variable + int_variable  # This will raise the error
    
# Example 2
string_variable = "Hello"
float_variable = 3.14
result = string_variable + float_variable  # This will also raise the error
    
  

To fix this error, you need to ensure that all the objects being concatenated are strings.

You can convert non-string objects to strings using the str() function before concatenating.

Here’s the modified example:

    
# Modified Example
string_variable = "Hello"
int_variable = 42
result = string_variable + str(int_variable)  # No error, result will be "Hello42"

string_variable = "Hello"
float_variable = 3.14
result = string_variable + str(float_variable)  # No error, result will be "Hello3.14"