Chapter 3: Intro To Python

Question 1

What does IDE stand for?

Answer 1

Integrated Development Environment

Question 2

What is the function of IDE?

Answer 2

1. Allows common activities of writing software such as:
   - editing source code
   - building executables
   - debugging
2. Help identify programming errors

Question 3

What are examples of IDE for python?

Answer 3

1. IDLE Python
2. Eclipse
3. PyDev

Question 4

Common errors in programming:

Answer 4

1. Syntax Error
2. Runtime Error
3. Logic Error

Question 5

Syntax Error

Answer 5

• indentation
• spelling errors

Question 6

Runtime error

Answer 6

• doesnt appear until program is run
• error message pops up
• called EXCEPTIONS

Question 7

example of runtime error

Answer 7

• division by zero
• using identifier that hasnt been defined

Question 8

Logic error

Answer 8

• expected output != actual output
• code will run successfully(doesn’t generate error messages)
• to identify: tracing step by step, understand what the code does

Question 9

How to write comments

Answer 9

1. using #…
2. using “””…”””

Question 10

How to check the reserved python words?

Answer 10

import keyword
keyword.kwlist

Question 11

Rules for naming variables:

Answer 11

1. start with LETTER or UNDERSCORE
2. CANNOT START W NUMBERS
3. cannot use keywords
4. only contain alpha-numeric & underscores
5. case-sensitive(age!=Age!=AGE)

Question 12

How to differentiate constant from variable?

Answer 12

use UPPERCASE to represent a constant

Question 13

What are the Built-in data types by default?

Answer 13

1. Text type
2. Numeric Types
3. Boolean Types
4. Sequence(list tuple range)
5. Binary

Question 14

How can a programmer get the data type of an object?

Answer 14

using type() function:
x = 5
print(type(x))

output: <class ‘int’>

Question 15

How are the boolean keywords written as?

Answer 15

lower case:
- and/or/not

Question 16

Python formatting:

Answer 16

x = 8, y = 10
print(“the value of x is {} and y is {}”.format(x,y))

x = 12.3456789
print(“the value of x is %3.2f” %x)
print(“the value of x is %3.4f” %x)

Question 17

How to use the functions in math module?

Answer 17

use

import math
#request input as usual
num = int(input(“please input a number: “)
#specify MODULE and FUNCTION
print (math.tan(float(num)))