problem in using int() with a list of strings

[akbarza]

hi
i am a beginner in python, so this problem that i encountered, maybe is silly.
i wrote in idle:

y=['l', '2', '3', '5', '8', '6', '9']
when i write int(y[0]) then i have an error as:
Traceback (most recent call last):
File "<pyshell#87>", line 1, in <module>
int(y[0])
ValueError: invalid literal for int() with base 10: 'l'
but when i write int(y[1]) or int(y[2]) , the correct values are displayed and there is no error. i searched net for this but i can not true thing.
thanks

[perfringo]

To which value should I (capital letter i) convert as integer?

It’s always a good practice to read error messages.

[deanhystad]

It is pretty silly. Lowercase "L" is not a valid literal for int. Try replacing "l" with "1" (one).

Valuable lesson though. Do not use lowercase L as a variable name because it is difficult to distinguish from the 1 (one). For the same reason don't use uppercase "o" as a variable name.

[Lahearle]

hi
i am a beginner in python, so this problem that i encountered, maybe is silly.
i wrote in idle:

y=['l', '2', '3', '5', '8', '6', '9']
when i write int(y[0]) then i have an error as:
Traceback (most recent call last):
File "<pyshell#87>", line 1, in <module>
int(y[0])
ValueError: invalid literal for int() with base 10: 'l'
but when i write int(y[1]) or int(y[2]) , the correct values are displayed and there is no error. i searched net for this but i can not true thing.
thanks

Well im noob too but

1. Quotes around the number makes it a string and int is for math not strings
2. you can't just write int(y[0]) if you are trying to get the [0] placed string
3. you need to write string(y[0]) if you are trying to print I which is a letter and not an integer as far as I know

[deanhystad]

1. Quotes around the number makes it a string and int is for math not strings
2. you can't just write int(y[0]) if you are trying to get the [0] placed string
3. you need to write string(y[0]) if you are trying to print I which is a letter and not an integer as far as I know

Most of this is wrong, or I am misunderstanding what you wrote.
1. int(object, base) is a function for converting the object to an int. The object can be a number or a float. The OP is using int() to convert a str to an int. The problem is that the str is not something that can be converted to an int.

2. int(y[0]) is exactly how you would get the str y[0] and convert it to an int.

3. y[0] is a lowercase "L", not an uppercase "i", but it is easy to understand the mistake. Add uppercase "i" as being another bad variable name because it can easily be confused not only with the digit "1", but the lowercase letter "L".