python - removing rows from an array if first entry in row is particular string -

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i want remove rows array y have 'copy' first entry

i tried this

for in range(len(y)-1):     if y[i][0] == 'copy':         n.delete(y,i,0)

i don't error rows haven't been deleted when print y.

i tried

y[y[:,0] != 'copy']

but error

indexerror                                traceback (most recent call last) <ipython-input-36-b03bdf03aa31> in <module>() ----> 1 y[y[:,0] != 'copy']  indexerror: many indices

if explain why not working , suggest solution appreciated

thanks

with list comprehension:

[x x in y if x[0] != 'copy']

with filter() , lambda:

list(filter(lambda x: x[0] != 'copy', y))

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