a
    é´«jw4  ã                   @   sb   d dl Zd dlZd dlmZmZmZ d dlmZ	 d dl
m  mZ G dd„ dƒZG dd„ dƒZdS )é    N)Ú	DataFrameÚIndexÚSeriesc                   @   sÄ   e Zd Zejdd„ ƒZej dee	dƒƒ¡dd„ ƒZ
dd„ Zd	d
„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zdd„ Zej ddg d¢fd d!g¡d"d#„ ƒZd$d%„ Zd&d'„ Zd(S ))Ú
TestSamplec                 C   s:   |t u rtj d¡ d¡}ntj d¡ d¡}||d d�S )Né   é
   )r   r   )Zdtype)r   ÚnpÚrandomÚdefault_rngÚstandard_normal)ÚselfÚframe_or_seriesZarr© r   úe/var/www/html/laksyashrimp/venv/lib/python3.9/site-packages/pandas/tests/frame/methods/test_sample.pyÚobj   s    zTestSample.objÚtestr   c              	   C   s@  t j d¡ dd¡}t |jd|d�|jd|d�¡ t |jd|d�|jd|d�¡ t |jdt j |¡d�|jdt j |¡d�¡ t |jdt j |¡d�|jdt j |¡d�¡ t |jddt j |¡d	�|jddt j |¡d	�¡ g g  }}tdƒD ],}| |jd|d�¡ | |jd|d�¡ qútj|Ž  tj|Ž  d S )
Nr   r   éd   é   ©ÚnÚrandom_stategffffffæ?)Úfracr   T)r   Úreplacer   )	r   r	   r
   ZintegersÚtmÚassert_equalÚsampleÚrangeÚappend)r   r   r   ÚseedZos1Zos2Ú_r   r   r   Útest_sample   sD    ÿþþþ
ý
ýú

zTestSample.test_samplec                 C   sL   t |jdd�dkƒsJ ‚t |jdd�dkƒs0J ‚t |jdd�dkƒsHJ ‚d S )Nr   ©r   gÃõ(\�ÂÕ?©r   é   g
×£p=
×?)Úlenr   ©r   r   r   r   r   Útest_sample_lengthsE   s    zTestSample.test_sample_lengthsc                 C   sB   d}t jt|d�� |jdd� W d   ƒ n1 s40    Y  d S )Nzdrandom_state must be an integer, array-like, a BitGenerator, Generator, a numpy RandomState, or None©ÚmatchZa_string)r   ©ÚpytestÚraisesÚ
ValueErrorr   ©r   r   Úmsgr   r   r   Ú test_sample_invalid_random_stateK   s    ÿz+TestSample.test_sample_invalid_random_statec                 C   sD   d}t jt|d�� |jddd� W d   ƒ n1 s60    Y  d S )Nz0Please enter a value for `frac` OR `n`, not bothr'   r#   g333333Ó?)r   r   r)   r-   r   r   r   Ú"test_sample_wont_accept_n_and_fracT   s    z-TestSample.test_sample_wont_accept_n_and_fracc                 C   sx   t jtdd�� |jdd� W d   ƒ n1 s00    Y  t jtdd�� |jdd� W d   ƒ n1 sj0    Y  d S )Nz<A negative number of rows requested. Please provide `n` >= 0r'   éýÿÿÿr!   z?A negative number of rows requested. Please provide `frac` >= 0g333333Ó¿r"   r)   r%   r   r   r   Ú$test_sample_requires_positive_n_fracZ   s    þ*þz/TestSample.test_sample_requires_positive_n_fracc                 C   s>   t jtdd�� |jdd� W d   ƒ n1 s00    Y  d S )Nz$Only integers accepted as `n` valuesr'   gš™™™™™	@r!   r)   r%   r   r   r   Útest_sample_requires_integer_nf   s    z)TestSample.test_sample_requires_integer_nc                 C   sÖ   d}t jt|d��" |jdddgd� W d   ƒ n1 s:0    Y  t jt|d��( dgd }|jd|d� W d   ƒ n1 s€0    Y  t jtd	d��* tg d
¢ƒ}|jd|d� W d   ƒ n1 sÈ0    Y  d S )Nú5Weights and axis to be sampled must be of same lengthr'   r#   r   é   ©r   Úweightsç      à?é   z%Fewer non-zero entries in p than size)r   r   gš™™™™™É?r   )r*   r+   r,   r   r   )r   r   r.   Úbad_weightsZbad_weight_seriesr   r   r   Ú"test_sample_invalid_weight_lengthsk   s    0
,z-TestSample.test_sample_invalid_weight_lengthsc                 C   sN   dgd }d}t jt|d�� |jd|d� W d   ƒ n1 s@0    Y  d S )Ngš™™™™™¹¿r   z.weight vector many not include negative valuesr'   r#   r6   r)   )r   r   r:   r.   r   r   r   Útest_sample_negative_weightsy   s    
z'TestSample.test_sample_negative_weightsc                 C   sª   dgd }t j|d< d}tjt|d�� |jd|d� W d   ƒ n1 sJ0    Y  dgd }t j |d< tjt|d�� |jd|d� W d   ƒ n1 sœ0    Y  d S )Ngš™™™™™¹?r   r   z*weight vector may not include `inf` valuesr'   r#   r6   )r   Úinfr*   r+   r,   r   )r   r   Zweights_with_infr.   Zweights_with_ninfr   r   r   Útest_sample_inf_weights€   s    

,
z"TestSample.test_sample_inf_weightsc                 C   sJ   dgd }t jtdd�� |jd|d� W d   ƒ n1 s<0    Y  d S )Nr   r   ú$Invalid weights: weights sum to zeror'   r#   r6   r)   )r   r   Zzero_weightsr   r   r   Útest_sample_zero_weightsŽ   s    
z#TestSample.test_sample_zero_weightsc                 C   sL   t jgd }tjtdd�� |jd|d� W d   ƒ n1 s>0    Y  d S )Nr   r?   r'   r#   r6   )r   Únanr*   r+   r,   r   )r   r   Znan_weightsr   r   r   Útest_sample_missing_weights•   s    z&TestSample.test_sample_missing_weightsc                 C   s8   d gd }d|d< t  |jdd|d�|jdd… ¡ d S )Nr   r8   é   r5   r   ©r   Úaxisr7   é   )r   r   r   Úiloc)r   r   Zweights_with_Noner   r   r   Útest_sample_none_weightsœ   s
    
ÿz#TestSample.test_sample_none_weightszfunc_str,argznp.array)r   r#   r5   r   )znp.random.MT19937r#   )znp.random.PCG64r9   c                 C   sh   t tddƒtddƒdœƒ}t ||¡}|jdt|ƒ|ƒd�}|jdt t|ƒ|ƒ¡d�}t ||¡ d S )Nr   é   é   ©Úcol1Úcol2r#   r   )	r   r   r   Úget_objr   ÚevalÚcomr   r   )r   Zfunc_strÚargr   r   ÚresultÚexpectedr   r   r   Útest_sample_random_state¤   s
    
z#TestSample.test_sample_random_statec                 C   sŠ   |t  d¡ƒ}t j d¡}|jd|d�}|jd|d�}|jj|jjk ¡ rNJ ‚|jdt j d¡d�}|jdt j d¡d�}t 	||¡ d S )Nr   r   é2   r   r9   )
r   Zaranger	   r
   r   ÚindexÚvaluesÚallr   r   )r   r   r   ÚrngZresult1Zresult2r   r   r   Útest_sample_generator´   s    z TestSample.test_sample_generatorc                 C   s`   t dtdƒiƒ}t ||¡}d}tjt|d�� |jddd� W d   ƒ n1 sR0    Y  d S )NÚAÚabczJReplace has to be set to `True` when upsampling the population `frac` > 1.r'   r   F)r   r   )r   Úlistr   rN   r*   r+   r,   r   )r   r   r   r.   r   r   r   Ú*test_sample_upsampling_without_replacementÄ   s    ÿz5TestSample.test_sample_upsampling_without_replacementN)Ú__name__Ú
__module__Ú__qualname__r*   Zfixturer   ÚmarkZparametrizer]   r   r    r&   r/   r0   r2   r3   r;   r<   r>   r@   rB   rH   rT   rZ   r^   r   r   r   r   r      s2   

.	
ýþ
r   c                   @   s<   e Zd Zdd„ Zdd„ Zdd„ Zdd„ Zd	d
„ Zdd„ ZdS )ÚTestSampleDataFramec           	      C   s&  dgd }d|d< t tddƒtddƒdgd |dœƒ}|jdd	d
�}t ||jdd… ¡ ttdƒƒ}d}tjt	|d�� |jddd
� W d   ƒ n1 sœ0    Y  d}tjt	|d��  |jdddd� W d   ƒ n1 sÞ0    Y  tjt
dd�� |jddd
� W d   ƒ n1 �s0    Y  dgd }d|d< t |jd|d
�|jd d… ¡ t tdƒdgd dœƒ}ddg}t |jdd|d�|dg ¡ t |jdd|d�|dg ¡ dgd }d|d< t |jdd|d�|jdd… ¡ t |jdd|d�|jdd… ¡ d}tjt	|d�� |jddd� W d   ƒ n1 �sB0    Y  d}tjt	|d�� |jddd� W d   ƒ n1 �s„0    Y  ttdƒƒ}tjt	d d�� |jddd� W d   ƒ n1 �sÎ0    Y  d!}tjt	|d��& |jdddgd d� W d   ƒ n1 �s0    Y  d S )"Nr   r   r5   rC   rI   rJ   Úa)rL   rM   Ú	colStringÚeasyweightsrf   r6   rF   z@Strings cannot be passed as weights when sampling from a Series.r'   r#   Zweight_columnzLStrings can only be passed to weights when sampling from rows on a DataFrame)r   r7   rE   z-'String passed to weights not a valid column'Znot_a_real_column_namer8   rK   rD   rM   ÚcolumnsÚrowsrV   z)No axis named 2 for object type DataFramer   )r   rE   z2No axis named not_a_name for object type DataFrameZ
not_a_namez&No axis named 1 for object type Seriesr4   )r   r   r   r   Úassert_frame_equalrG   r   r*   r+   r,   ÚKeyError)	r   Úeasy_weight_listÚdfÚsample1Úserr.   Zweights_less_than_1Zsecond_column_weightÚweightr   r   r   r    Ö   sh    
üÿ,ÿ.ÿ.
 ÿÿ
"ÿ...zTestSampleDataFrame.test_samplec                 C   s|   dgd }d|d< t tddƒtddƒdgd d	œƒ}|jdd|d
�}t ||dg ¡ t |jddd�|jdddd�¡ d S )Nr   r#   r5   r   r   rI   rJ   rd   ©rL   rM   re   rD   re   é*   r   )r   rE   r   )r   r   r   r   ri   )r   rk   rl   rm   r   r   r   Útest_sample_axis1+  s    
ÿÿz%TestSampleDataFrame.test_sample_axis1c                 C   s  t g d¢g d¢dœg d¢d�}tg d¢g d¢d�}t |jdg |jd	|d
�¡ tg d¢g d¢d�}t |jdg |jd	|d
�¡ tddgddgd�}t |jdg |jd	|d
�¡ td	dgd	dgd�}tjtdd�� |jd	|d
� W d   ƒ n1 sú0    Y  d S )N)rC   rF   é   ©rd   ÚbÚcrK   )é	   rC   r#   )rV   )r5   r   r   )r#   rC   rw   r#   r5   ©r7   )gü©ñÒMbP?r   i'  )r#   rC   r   g{®Gáz„?r   rC   r   r?   r'   )	r   r   r   ri   Úlocr   r*   r+   r,   )r   rl   rn   Zser2Zser3Zser4r   r   r   Ú%test_sample_aligns_weights_with_frame;  s    z9TestSampleDataFrame.test_sample_aligns_weights_with_framec                 C   s^   t tj d¡ d¡g d¢d�}| d¡}t d ¡� d|d< W d   ƒ n1 sP0    Y  d S )Nr   )r   r#   rt   )rg   r#   r5   Úd)r   r   r	   r
   r   r   r   Zassert_produces_warning)r   rl   Zdf2r   r   r   Útest_sample_is_copyP  s    ÿ
z'TestSampleDataFrame.test_sample_is_copyc                 C   s�   t  t jdt jg¡}| ¡ }tg d¢ƒ}|j|d� t ||¡ tg d¢dt jt jgdœƒ}|d  ¡ }|jdddd	� |d }t 	||¡ d S )
Nr5   )r5   r   r#   rx   )r5   r5   r5   )rW   r7   r7   g      ð?T)r   r   r7   )
r   ÚarrayrA   Úcopyr   r   r   Zassert_numpy_array_equalr   Zassert_series_equal)r   rR   rS   rn   rl   r   r   r   Ú#test_sample_does_not_modify_weights[  s    z7TestSampleDataFrame.test_sample_does_not_modify_weightsc                 C   sR   t tddƒtddƒdgd dœƒ}|jddd�}ttdƒƒ}tj|j|dd	� d S )
Nr   rI   rJ   rd   rp   r#   T)Zignore_index)Úexact)r   r   r   r   r   Zassert_index_equalrV   )r   rl   rR   Zexpected_indexr   r   r   Útest_sample_ignore_indexm  s    ÿz,TestSampleDataFrame.test_sample_ignore_indexN)	r_   r`   ra   r    rr   rz   r|   r   r�   r   r   r   r   rc   Ò   s   Urc   )Únumpyr   r*   Zpandasr   r   r   Zpandas._testingZ_testingr   Zpandas.core.commonÚcoreÚcommonrP   r   rc   r   r   r   r   Ú<module>   s    F