Bug summary
Pyright shows errors when passing numpy arrays to fill_between
Code for reproduction
import numpy as np
import matplotlib.pyplot as plt
x = np.array([0, 1, 2, 3, 4])
y = np.array([1.0, 2.0, 3.0, 2.0, 1.0])
err = np.array([0.1, 0.2, 0.1, 0.2, 0.1])
fig, ax = plt.subplots()
ax.fill_between(
x,
y1=(y - err),
y2=(y + err),
)Actual outcome
WARNING: there is a new pyright version available (v1.1.409 -> v1.1.410).
Please install the new version or set PYRIGHT_PYTHON_FORCE_VERSION to `latest`
/home/acampove/Tests/matplotlib/test.py
/home/acampove/Tests/matplotlib/test.py:12:8 - error: Argument of type "NDArray[Any]" cannot be assigned to parameter "y1" of type "Scalar" in function "fill_between"
Type "NDArray[Any]" is not assignable to type "Scalar"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "str"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "int"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "float"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "bool"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "Period"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "Timestamp"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "Timedelta"
... (reportArgumentType)
/home/acampove/Tests/matplotlib/test.py:13:8 - error: Argument of type "NDArray[Any]" cannot be assigned to parameter "y2" of type "Scalar" in function "fill_between"
Type "NDArray[Any]" is not assignable to type "Scalar"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "str"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "int"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "float"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "bool"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "Period"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "Timestamp"
"ndarray[_AnyShape, dtype[Any]]" is not assignable to "Timedelta"
... (reportArgumentType)
2 errors, 0 warnings, 0 informations
Expected outcome
No errors
Additional information
pyright 1.1.409
Name: numpy
Version: 2.3.5
Operating system
No response
Matplotlib Version
3.10.8
Matplotlib Backend
No response
Python version
No response
Jupyter version
No response
Installation
None
Bug summary
Pyright shows errors when passing numpy arrays to fill_between
Code for reproduction
Actual outcome
Expected outcome
No errors
Additional information
pyright 1.1.409
Name: numpy
Version: 2.3.5
Operating system
No response
Matplotlib Version
3.10.8
Matplotlib Backend
No response
Python version
No response
Jupyter version
No response
Installation
None