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+--- Thread: Regarding question on coding (/thread-27097.html)
Regarding question on coding - asmfloyd - May-26-2020
Hi,
I am learning python. I just saw this coding which is generating 2 datasets.I have a question. Can someone explain the part in "dataset1"? I believe it is a list comprehension.
Mainly I am not understanding what "for child in children" does?
import numpy as np
np.random.seed(10)
children=range(10)
months=np.arange(13)
dataset1=[ (month, np.dot(month,24.7) + np.random.normal(loc=0,scale=20))
for month in months
for child in children]
month_data=[element[0] for element in dataset1] # Gets 1st column from data
weight_data=[element[1] for element in dataset1] Thanks,
RE: Regarding question on coding - deanhystad - May-26-2020
Comprehensions can be unwound. Start at the end and work your way back to the assignment. Use the same process, but in reverse, to convert for loops to a comprehension.
for child in children:
for month in months:
dataset1.append(
(month, np.dot(month, 24.7)+np.random.normal(loc=0, scale=20))
)
RE: Regarding question on coding - buran - May-26-2020
(May-26-2020, 01:04 AM)asmfloyd Wrote: I am not understanding what "for child in children" does?children is range object. by iterating over
children, child value is changing from 0 to 9. It looks the purpose is to have 10 values in the dataset for each month value