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String is a common data type and very familiar to programmers. In this article, we will offer you an answer and method to one of the problems related to this subject, it is “Typeerror: String indices must be integers” in Python. Let’s begin to explore the key and relevant message below!
What are string indices?
First of all, to help you better understand the problem, we will give the concept and syntax of string index. The fact that each character in a Python string has a corresponding index allows us to access and manipulate strings in similar ways that we can do with other sequential data types. Thus, each character of the string also corresponds to the index , starting with the number index 0, not 1.
Syntax:
<string>[i:j]
In there: i is the starting position and j is the ending position of the substring.
For example:
kt = "kim tuyen"
print(kt[2])
Output
m
Why does the error “Typeerror: String indices must be integers” occur?
As the theory we provided above, you can easily understand what causes the error “Typeerror: String indices must be integers” in Python. When you want a string index, you must use a number and remember that in python the index will start from 0. If you intentionally declare with string, the above error will be returned.
Below, we will give a sample example for you to visualize:
You have this string:
Cars = ['truck', 'Jeep', 'minivan', 'limousine', 'convertible']
You want to access the 2nd vehicle in the list and use a string index of “Jeep” like this:
print(cars['Jeep'])
If you follow the above steps, the result will be this error:
Typeerror: String indices must be integers
How to fix it?
The above error is a fairly basic error and will often be encountered by those who are new to coding. If you are still not sure how to handle this error, here are some solutions for you. Understand the essence and read the syntax carefully, you can recognize the problem you have and fix it quickly.
Solution 1: Using integer value in index
With this method, you will return to the syntactic formula, which is to use integers:
For the above example, to get the correct answer, you will need to declare the following:
Cars = ['truck', 'Jeep', 'minivan', 'limousine', 'convertible']
print(cars['2'])
output:
Jeep
Solution 2: Using loops with .values()
If you are declaring a string and have a count attached, to print the above values you can use this method. Here is an illustrative example:
Cars = {
'truck': 3,
'Jeep': 2,
'minivan': 1,
'limousine': 4,
'convertible': 5
run the following command:
for quantity in Cars.values():
print(quantity)
Output:
3
2
1
4
5
Conclusion
Above we have helped you better understand and have solutions when encountering the error “Typeerror: String indices must be integers” in Python. If you have any questions or encounter problems during the operation, please contact us for quick support. Thanks for reading!
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