def generateMenu(c):
former = c.lst().copy()
if c.strategy() == 'readfile':
pos = input('Enter the start position (0 required for the 1st time): ')
if len(c.lst()) == 0:
pos = 0
print('Set to 0')
else:
pos = v.validatePositiveInt(pos, 'Start position')
fn = input('Enter filename (.txt): ')
fn = v.validateFileName(fn)
c.executeStrategy(pos, fn)
elif c.strategy() == 'iterator':
pos = input('Enter the start position (0 required for the 1st time): ')
if len(c.lst()) == 0:
pos = 0
print('Set to 0')
else:
pos = v.validatePositiveInt(pos, 'Start position')
n = input('Enter quantity of numbers you want to add: ')
n = v.validatePositiveInt(n, 'Quantity')
c.executeStrategy(pos, n)
Event.update('add', former, pos, c.lst())
print('Collection succesfully generated!')
def sliceMenu(c):
start = input('Enter start position of deletion: ')
end = input('Enter end position of deletion: ')
start = v.validatePositiveInt(start, 'Start')
end = v.validatePositiveInt(end, 'End')
if start > end or end >= len(c.lst()):
raise ValueError('Bad index value')
for i in range(end - start + 1):
c.lst().pop(start)
print('Items succesfully deleted!')
def sliceMenu(c):
start = input('Enter start position of deletion: ')
end = input('Enter end position of deletion: ')
start = v.validatePositiveInt(start, 'Start')
end = v.validatePositiveInt(end, 'End')
if start > end or end >= len(c.lst()):
raise ValueError('Bad index value')
former = c.lst().copy()
for _ in range(end - start + 1):
c.lst().pop(start)
Event.update('remove', former, [start, end], c.lst())
print('Items succesfully deleted!')
def generateWithIterator(c):
print('Please fill the list using \'iterator\' strategy:')
c.setStrategy(IteratorStrategy())
former = c.lst().copy()
pos = 0
n = input('Enter quantity of numbers you want to add: ')
n = v.validatePositiveInt(n, 'Quantity')
c.executeStrategy(pos, n)
Event.update('add', former, pos, c.lst())
print('Collection succesfully generated!')