Exercise 4

1. Write a Python script to extract a course number, code, and name from the following text using regular expressions.

CoursesData = """101 COM Computers 205 MAT Mathematics 189 ENG English"""

import re

CoursesData = """101 COM Computers 205 MAT Mathematics 189 ENG English"""

# extract course number
course_number = re.findall('[0-9]{3}', CoursesData)
course_number

['101', '205', '189']

# extract course code
course_code = re.findall('[A-Z]{3}', CoursesData)
course_code

['COM', 'MAT', 'ENG']

# extract course name
course_name = re.findall('[A-Za-z]{4,}', CoursesData)
course_name

['Computers', 'Mathematics', 'English']

1. Write a Python script to extract each course’s details in a tuple form from the following text using regular expressions. In addition, use regular expressions to retrieve string values in the CoursesData and then retrieve numerical values in CoursesData.

pattern = '([0-9]{3})\s*([A-Z]{3})\s*([A-Za-z]{4,})'
result = re.findall(pattern, CoursesData)
result

[('101', 'COM', 'Computers'),
 ('205', 'MAT', 'Mathematics'),
 ('189', 'ENG', 'English')]

1. Write a Python script to extract digits of size 4 and digits of size 2 to 4 using regular expressions.

CoursesData = """10 COM Computers 205 MAT Mathematics 1899 ENG English"""

CoursesData = """10 COM Computers 205 MAT Mathematics 1899 ENG English"""

# 4 digits
result = re.findall('[0-9]{4}', CoursesData)
print(result)

# 2-4 digits
result = re.findall('[0-9]{2,4}', CoursesData)
print(result)

['1899']
['10', '205', '1899']

# 4 digits
result = re.findall('\d{4}', CoursesData)
print(result)

# 2-4 digits
result = re.findall('\d{2,4}', CoursesData)
print(result)

['1899']
['10', '205', '1899']