This
week, I learnt a lot about Object-Oriented Programming. I learnt something new
about the way we write methods in Python. For example, we can write the type
contract by using colon. Before 148, I wrote they type contract under the line
of header. However, I write the type contract in the header now. Colons can
also use in functions that make the form of the functions simple. During the
class, I enjoyed the way we study. I enjoyed thinking about the questions. I
mean not the general questions but the details of the functions running. I
think the details are very important for a program. A small bug may result in a
big trouble that makes the entire program fail. There is a problem happens to
me: how to get start?. Specifically, I do not quite easy to start the first
code. It is not about the language is English which is not my first language
and not about I do not understand what the program want me to do. It is about
the organization of the whole program; how to make connections between
functions. Good news is I found a way to solve it. Before I start to write
functions, I write general ideas in paper and organize the functions in paper. Then
it is easy to write it in Python. It is not only easy to get start but also
help me with the whole program. Sometimes I am not sure with the function I wrote.
So I test the function in Python Shell. I am confident with the material in
this week. I spent many times on thinking about the materials. Once I
understand I noted it. Therefore, when I watch back, it shows me the percentage
of understanding the materials. The Python program we learnt now is also taught
in CSC108, but in 108 we learnt how to write and in 148 we seek more
outstanding ways of programming. The biggest achievement I made this week was
during Lab. I had many discussions with my partner and finished the Lab exercises.
The Lab was going perfectly well. I learnt many things by practice.
Q: is
that necessary to write a initial method if there are no instance variables in
a class.
A: we
do not need to write it and the Python runs well.
