CX, CCX (Toffoli) gate, and their n-bit generalization in qiskit

In qiskit, I know that I can implement CX and CCX gates using cx() and ccx(). Is there any way to write a n-bit generalization, for example a control not gate with 5 qubits as control and 1 qubit as target?

You can use the mcx gate, which can take an arbitrary number of qubits as control. As an example:

from qiskit import QuantumCircuit, QuantumRegister

controls = QuantumRegister(3, "c_qb")
target = QuantumRegister(1, "t_qb")
circuit = QuantumCircuit(controls, target)

circuit.mcx(controls, target[0])

print(circuit)

output: