dhenderson / criticalpy

Python critical path calculation module

Critical Py

Critical Py provides classes and methods for calculating a critical path.

Setup

Run the following from your terminal:

setup.py install

Dependencies

Critical Py requires Python 3.0 or above

criticalpy's Issues

Problem when ading new task in input CSV

I have added a new task to the input CSV (example provided) and after this I get an error that apparently does not make sense to me:

File "/home/antonio/Escritorio/criticalpy/criticalpy.py", line 108, in calculate_late_start
self.late_start = self.late_finish - self.duration + 1
TypeError: unsupported operand type(s) for -: 'NoneType' and 'int'

The CSV is the following (notice task with id 50 added to the list)

id,name,duration,predecessors
10,A,7,
20,B,10,10
25,B2,3,10
30,C,5,10
40,D,5,"20,30, 25"
50,E,3,10

Any idea? Thanks in advance