如何给数据集增加一列顺序？

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就是给一个数据集

SOC_TXT	Nilotinib	Imatinib	Nipre	Impre
BLOOD AND LYMPHATIC SYSTEM DISORDERS	11	6	11.34021	7.058824
CARDIAC DISORDERS	9	3	9.278351	3.529412
CONGENITAL, FAMILIAL AND GENETIC  DISORDERS	2		2.061856
EAR AND LABYRINTH DISORDERS	2		2.061856
ENDOCRINE DISORDERS	1	1	1.030928	1.176471
EYE DISORDERS	4	16	4.123711	18.82353
GASTROINTESTINAL DISORDERS	48	35	49.48454	41.17647
GENERAL DISORDERS AND ADMINISTRATION SITE  CONDITIONS	38	17	39.17526	20
HEPATOBILIARY DISORDERS	13	2	13.40206	2.352941
IMMUNE SYSTEM DISORDERS	2		2.061856
INFECTIONS AND INFESTATIONS	36	29	37.1134	34.11765
INJURY, POISONING AND PROCEDURAL  COMPLICATIONS	10	2	10.30928	2.352941
INVESTIGATIONS	39	27	40.20619	31.76471
METABOLISM AND NUTRITION DISORDERS	25	19	25.7732	22.35294
MUSCULOSKELETAL AND CONNECTIVE TISSUE  DISORDERS	52	20	53.60825	23.52941
NEOPLASMS BENIGN, MALIGNANT AND  UNSPECIFIED (INCL CYSTS AND POLYPS)	3	2	3.092784	2.352941
NERVOUS SYSTEM DISORDERS	46	16	47.42268	18.82353
PSYCHIATRIC DISORDERS	11	5	11.34021	5.882353
RENAL AND URINARY DISORDERS	7	4	7.216495	4.705882
REPRODUCTIVE SYSTEM AND BREAST DISORDERS	8	4	8.247423	4.705882
RESPIRATORY, THORACIC AND MEDIASTINAL  DISORDERS	16	8	16.49485	9.411765
SKIN AND SUBCUTANEOUS TISSUE DISORDERS	71	14	73.19588	16.47059
VASCULAR DISORDERS	12	2	12.37113	2.352941

增加一列order的顺序变量，千万别手输，因为很多！

SOC_TXT	Nilotinib	Imatinib	Nipre	Impre	order
BLOOD AND LYMPHATIC SYSTEM DISORDERS	11	6	11.34021	7.058824	1
CARDIAC DISORDERS	9	3	9.278351	3.529412	2
CONGENITAL, FAMILIAL AND GENETIC  DISORDERS	2		2.061856		3
EAR AND LABYRINTH DISORDERS	2		2.061856		4
ENDOCRINE DISORDERS	1	1	1.030928	1.176471	5
EYE DISORDERS	4	16	4.123711	18.82353	6
GASTROINTESTINAL DISORDERS	48	35	49.48454	41.17647	7
GENERAL DISORDERS AND ADMINISTRATION SITE  CONDITIONS	38	17	39.17526	20	8
HEPATOBILIARY DISORDERS	13	2	13.40206	2.352941	9
IMMUNE SYSTEM DISORDERS	2		2.061856		10
INFECTIONS AND INFESTATIONS	36	29	37.1134	34.11765	11
INJURY, POISONING AND PROCEDURAL  COMPLICATIONS	10	2	10.30928	2.352941	12
INVESTIGATIONS	39	27	40.20619	31.76471	13
METABOLISM AND NUTRITION DISORDERS	25	19	25.7732	22.35294	14
MUSCULOSKELETAL AND CONNECTIVE TISSUE  DISORDERS	52	20	53.60825	23.52941	15
NEOPLASMS BENIGN, MALIGNANT AND  UNSPECIFIED (INCL CYSTS AND POLYPS)	3	2	3.092784	2.352941	16
NERVOUS SYSTEM DISORDERS	46	16	47.42268	18.82353	17
PSYCHIATRIC DISORDERS	11	5	11.34021	5.882353	18
RENAL AND URINARY DISORDERS	7	4	7.216495	4.705882	19
REPRODUCTIVE SYSTEM AND BREAST DISORDERS	8	4	8.247423	4.705882	20
RESPIRATORY, THORACIC AND MEDIASTINAL  DISORDERS	16	8	16.49485	9.411765	21
SKIN AND SUBCUTANEOUS TISSUE DISORDERS	71	14	73.19588	16.47059	22
VASCULAR DISORDERS	12	2	12.37113	2.352941	23

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关键词：数据集 Respiratory Productive Conditions Procedural 如何

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