Enums — GateType, OpType, PIC_TYPE

API reference for core enumerations in pyqpanda3.

GateType

Enumeration of all quantum gate types. Used by QGate.gate_type(), noise model configuration, and transpilation.

Values

Value	Description
GATE_NOP	No operation (identity placeholder)
GATE_UNDEFINED	Undefined gate type
I	Identity gate
X	Pauli-X (NOT) gate
Y	Pauli-Y gate
Z	Pauli-Z gate
X1	SX gate ($\sqrt{X}$)
Y1	Y1 gate ($\sqrt{Y}$)
Z1	Z1 gate ($\sqrt{Z}$)
H	Hadamard gate
T	T gate ($\pi /8$ gate)
S	S gate (phase gate)
P	Parameterized phase gate
RX	Rotation around X axis
RY	Rotation around Y axis
RZ	Rotation around Z axis
RPHI	R-Phi gate
U1	U1 gate (single-parameter)
U2	U2 gate (two-parameter)
U3	U3 gate (three-parameter)
U4	U4 gate (four-parameter)
CU	Controlled-U gate
CNOT	Controlled-NOT gate
CZ	Controlled-Z gate
CP	Controlled-Phase gate
CRX	Controlled-RX gate
CRY	Controlled-RY gate
CRZ	Controlled-RZ gate
RYY	YY rotation gate
RXX	XX rotation gate
RZZ	ZZ rotation gate
RZX	ZX rotation gate
ISWAP	iSWAP gate
SQISWAP	Square-root iSWAP gate
SWAP	SWAP gate
IDLE	IDLE (no-operation) gate
ECHO	Echo gate
ORACLE	Oracle (user-defined unitary) gate
TOFFOLI	Toffoli (CCNOT) gate
BARRIER	Barrier operation
MS	Molmer-Sorensen gate

Example

from pyqpanda3.core import H, GateType

gate = H(0)
print(gate.gate_type())  # GateType.H

OpType

Enumeration of operation types in a quantum program.

Values

Value	Description
Gate	A quantum gate operation
Measure	A measurement operation

Example

from pyqpanda3.core import H, OpType

gate = H(0)
op = gate  # Operation with m_operation_type == OpType.Gate

PIC_TYPE

Enumeration of output formats for circuit visualization.

Note: Gate and Measure are exported aliases in pyqpanda3.core.__init__:

• Gate = OpType.Gate
• Measure = OpType.Measure

Use these aliases for brevity when checking operation types.

Values

Value	Description
TEXT	ASCII text visualization
LATEX	LaTeX source for circuit diagram

Example

from pyqpanda3.core import draw_qprog, QProg, H, CNOT, PIC_TYPE

prog = QProg()
prog << H(0) << CNOT(0, 1)

# Text visualization
text_output = draw_qprog(prog, PIC_TYPE.TEXT)
print(text_output)

# LaTeX visualization
latex_output = draw_qprog(prog, PIC_TYPE.LATEX)

See Also

• Gates — All quantum gate functions
• Noise — NoiseModel using GateType
• Visualization — draw_qprog function

---

set_print_options

Configures global print options for quantum circuit and program text output. Affects how circuit diagrams are rendered when printed or converted to strings.

Signature

set_print_options(precision: int = 8, param_show: int = True, linewidth: int = 100) -> None

Parameters

Parameter	Type	Default	Description
precision	int	8	Floating-point precision for parameter values in output
param_show	int	True	Whether to show gate parameters in circuit output (True or False)
linewidth	int	100	Maximum number of characters per line in output

Examples

from pyqpanda3.core import set_print_options, QCircuit, H, RX

# Set compact output with 4-digit precision
set_print_options(precision=4, linewidth=60)

circ = QCircuit()
circ << H(0) << RX(1, 0.123456789)
print(circ)