The argument of write has to be a string, so if we want to put other values in a file, we have to convert them to strings. The easiest way to do that is with str. An alternative is to use the format operator, %. When applied to integers, % is the mod…
一.The way of the program problem solving: The process of formulating a problem, finding a solution, and expressing the solution. high-level language: A programming language like Python that is designed to be easy for humans to read and write. low-leve…
where() public method Sets the WHERE part of the query. The method requires a $condition parameter, and optionally a $params parameter specifying the values to be bound to the query. The $condition parameter should be either a string (e.g. 'id=1') or…
from:http://interactivepython.org/courselib/static/pythonds/Introduction/InputandOutput.html Input and Output Input Python’s input function takes a single parameter that is a string. This string is often called the prompt because it contains some hel…
