Seems to be old code in Codercise I.13.4

Codebook
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Hi there! Hope you’re doing well.

It seems like the explanation preceding Codercise I.13.4 may contain old code.

It says to use 'qml.MultiControlledX(control_wires=[0, 1, 2], wires=4, control_values="001")`

but this gave me an error: Error: MultiControlledX.__init__() got an unexpected keyword argument 'control_wires'.

Using qml.MultiControlledX(wires=[0, 1, 2, 3], control_values=[0, 0, 1]) works.

Thanks!

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Hi @PranavUpreti! Welcome to the forum.
Yes, you are definitely right about this. Thank you for reporting this.
I’ll correct it asap.

1 Like
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Hello @daniela.murcillo ,

The same problem also appears in the tip of the codercise G.3.1

Tip. MultiControlledX(control_wires, wires, control_values) has a specified set of control_wires, a single target wire given by wires, and a string of control values, e.g., control_values = "1011" rather than a list of bits [1,0,1,1].

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Hi @Mulldrifter, welcome to the forum!
Thanks for reporting this, I’ll fix it right now.