- Create a list with all numbers from 1 to 20
- using list comprehension, create a list from the above with only the odd numbers
- using list comprehension, create a list from the above multiple by 10
- Create a generator function to produce endless random numbers from a given range:
g1 = genrandom(10,20) next(g1) # 16 next(g1) # 13 ....
- Add an option to change the range using send
- Create a generator function to produce endless numbers from a given range in a circular flow :
g1 = gencir(3) next(g1) # 0 next(g1) # 1 next(g1) # 2 next(g1) # 3 next(g1) # 2 next(g1) # 1 next(g1) # 0 next(g1) # 1 ....
- Add an option to change the max number using send
- Create a generator function to retrieve lines from log file in the following format:
1-this is an example of a debugging message 2-this is a warning message 3-this is an error message 2-another warning 2-yet another warning 1-debug msg 3-error<
The first char it the severity type (1-debug , 2-warning, 3-error)
- The generator function gets 2 parameters: number of lines to retrieve and the severity type
- Add an option to change the parameters using send
Generators and Classes
- Create a class LogReader
- Add members for number of lines and severity type
- Add functions for set/get operations
- Add a function gen() to retrieve a generator for log lines
Example use:
a = LogReader(2,5) g = a.getgen() next(g) .... display 5 lines with sev. 5 a.setsev(1) a.sellines(3) next(g) .... display 3 lines with sev. 1
- Add Exception handling (File not found, Access denied)
- Add option to use the class only using “with” statement:
with LogReader(1,2) as log:
x = log.read()