import numpy as np
from sklearn.datasets import make_classification
from sklearn.metrics import get_scorer
from sklearn.linear_model import LogisticRegression, LogisticRegressionCV
from sklearn.model_selection import LeaveOneGroupOut


import sklearn
sklearn.set_config(enable_metadata_routing=True)

rng = np.random.RandomState(0)

X, y = make_classification(
        n_samples=300000, n_features=8,
            random_state=10,
            n_informative=4,
            n_classes=2,

)
        

n_samples = X.shape[0] // 3
sw = np.ones_like(y)

# We weight the first fold n times more.
sw[:n_samples] = rng.randint(0, 5, size=n_samples)
groups_sw = np.r_[
    np.full(n_samples, 0), np.full(n_samples, 1), np.full(n_samples, 2)
]
splits_weighted = list(LeaveOneGroupOut().split(X, groups=groups_sw))

# We repeat the first fold n times and provide splits ourselves and overwrite
## initial resampled data
X_resampled_by_weights = np.repeat(X, sw.astype(int), axis=0)

##Need to know number of repitions made in total
n_reps = X_resampled_by_weights.shape[0] - X.shape[0]

y_resampled_by_weights = np.repeat(y, sw.astype(int), axis=0)
groups = np.r_[
    np.full(n_reps + n_samples, 0), np.full(n_samples, 1), np.full(n_samples, 2)
]
splits_repeated = list(LeaveOneGroupOut().split(X_resampled_by_weights, groups=groups))

est_weighted = LogisticRegression(solver = "liblinear").fit(X,y,sample_weight=sw)
est_repeated = LogisticRegression(solver = "liblinear").fit(X_resampled_by_weights,y_resampled_by_weights)

np.testing.assert_allclose(est_weighted.coef_, est_repeated.coef_)


est_weighted = LogisticRegressionCV(cv=splits_weighted, solver = "liblinear").fit(X,y,sample_weight=sw)

est_repeated = LogisticRegressionCV(cv=splits_repeated, solver = "liblinear").fit(X_resampled_by_weights,y_resampled_by_weights)

np.testing.assert_allclose(est_weighted.coef_, est_repeated.coef_)

AssertionError: 
Not equal to tolerance rtol=1e-07, atol=0

Mismatched elements: 8 / 8 (100%)
Max absolute difference among violations: 0.02352997
Max relative difference among violations: 10.49415031
 ACTUAL: array([[ 5.580057e-01,  1.455297e-01,  1.117538e-02,  9.940221e-04,
         2.078733e-05, -2.118241e-01, -2.361904e-01, -6.555003e-01]])
 DESIRED: array([[ 5.757953e-01,  1.541149e-01,  9.722671e-04,  1.094184e-03,
         1.143567e-04, -2.027509e-01, -2.405034e-01, -6.790303e-01]])