def add_range_column(frame):
start = int(random.expovariate(0.05) - 5)
step = 0
while step == 0:
step = int(1 + random.random() * 3)
stop = start + step * frame.nrows
rangeobj = range(start, stop, step)
name = random_string()
frame.add_range_column(name, rangeobj)
def __init__(self, context):
super().__init__(context)
start = int(random.expovariate(0.05) - 5)
step = 0
while step == 0:
step = int(1 + random.random() * 3)
stop = start + step * self.frame.nrows
self.range = range(start, stop, step)
self.name = random_string()
def replace_nas_in_column(frame):
icol = random.randint(0, frame.ncols - 1)
if frame.types[icol] is bool:
replacement_value = random.choice([True, False])
elif frame.types[icol] is int:
replacement_value = random.randint(-100, 100)
elif frame.types[icol] is float:
replacement_value = random.random() * 1000
elif frame.types[icol] is str:
replacement_value = random_string()
res = frame.replace_nas_in_column(icol, replacement_value)
def __init__(self, context):
super().__init__(context)
self.icol = random.randint(0, self.frame.ncols - 1)
coltype = self.frame.types[self.icol]
if coltype is bool:
self.replacement_value = random.choice([True, False])
elif coltype is int:
self.replacement_value = random.randint(-100, 100)
elif coltype is float:
self.replacement_value = random.random() * 1000
elif coltype is str:
self.replacement_value = random_string()
elif coltype is None:
self.skipped = True
else:
raise RuntimeError(f"Unknown type {coltype}")
if self.icol < self.frame.nkeys:
colname = self.frame.names[self.icol]
self.raises = ValueError
self.error_message = \
f"Cannot change values in a key column {colname}"