python - 字符串替换将结果转换为整数python

Question

line = ['R2', 'R5', 'R6', 'R7', 'R10', 'R12', 'R13', 'R15', 'R18', 'R20', 'R21', 'R22', 'R23', 'R24', 'R26', 'R30', 'R31', 'R32', 'R33', 'R34', 'R35', 'R36', 'R37', 'R38', 'R44', 'R45', 'R46', 'R47', 'R48', 'R53', 'R55', 'R56', 'R63', 'R66', 'R68', 'R69', 'R70', 'R74', 'R78', 'R80', 'R81', 'R82', 'R83', 'R84', 'R90', 'R91', 'R92', 'R97', 'R98', 'R99', 'R100', 'R101', 'R102', 'R103', 'R108', 'R109', 'R111', 'R115', 'R116', 'R117', 'R118', 'R120', 'R121', 'R123', 'R124', 'R126', 'R130', 'R131', 'R132', 'R136', 'R138', 'R141', 'R142', 'R151', 'R152', 'R153', 'R154', 'R155', 'R156', 'R158', 'R160', 'R161', 'R163', 'R164', 'R167', 'R169', 'R171', 'R172', 'R177', 'R178', 'R179', 'R180', 'R181', 'R182', 'R183', 'R184', 'R186', 'R190', 'R192', 'R195', 'R196', 'R199', 'R201', 'R203', 'R204', 'R205', 'R206', 'R207', 'R209', 'R210', 'R211', 'R213', 'R214', 'R215', 'R216', 'R217', 'R223', 'R225', 'R227', 'R228', 'R229', 'R231', 'R233', 'R237', 'R238', 'R239', 'R240', 'R245', 'R246', 'R247', 'R248', 'R249', 'R250', 'R252', 'R253', 'R254', 'R255', 'R257', 'R258', 'R265', 'R266', 'R267', 'R268', 'R270', 'R271', 'R273', 'R275', 'R276', 'R277', 'R279', 'R280', 'R281', 'R284', 'R287', 'R290', 'R291', 'R292', 'R293', 'R294', 'R296', 'R299', 'R300', 'R301', 'R303', 'R304', 'R305', 'R306', 'R307', 'R308', 'R309', 'R310', 'R312', 'R313', 'R314', 'R315', 'R317', 'R320', 'R321', 'R323', 'R325', 'R327', 'R329', 'R330', 'R331', 'R334', 'R335', 'R336', 'R339', 'R340', 'R341', 'R343', 'R344', 'R345', 'R347', 'R349', 'R350', 'R352', 'R354', 'R356', 'R358', 'R359', 'R360', 'R361', 'R362', 'R363', 'R365', 'R367', 'R372', 'R373', 'R376', 'R378', 'R379', 'R381', 'R384', 'R386', 'R388', 'R393', 'R397', 'R398', 'R399', 'R401', 'R402', 'R403', 'R405', 'R406', 'R407', 'R410', 'R411', 'R413', 'R414', 'R416', 'R419', 'R420', 'R421', 'R422', 'R427', 'R430', 'R433', 'R434', 'R435', 'R438', 'R439', 'R443', 'R444', 'R445', 'R453', 'R454', 'R455', 'R456', 'R458', 'R459', 'R460', 'R461', 'R462', 'R463', 'R464', 'R466', 'R467', 'R468', 'R469', 'R470', 'R473', 'R475', 'R476', 'R478', 'R481', 'R482', 'R483', 'R485', 'R487', 'R488', 'R489', 'R490', 'R492', 'R494', 'R496', 'R497', 'R499', 'R500', 'R502', 'R503', 'R506', 'R508', 'R509', 'R511', 'R512', 'R516', 'R517', 'R519', 'R520', 'R528', 'R530', 'R532', 'R537', 'R539', 'R540', 'R541', 'R542', 'R544', 'R545', 'R547', 'R549', 'R550', 'R552', 'R555', 'R558', 'R560', 'R561', 'R562', 'R563', 'R564', 'R565', 'R566', 'R568', 'R571', 'R572', 'R573', 'R574', 'R576', 'R579', 'R581', 'R583', 'R584', 'R585', 'R586', 'R588', 'R590', 'R592', 'R593', 'R595', 'R597', 'R598', 'R600', 'R601', 'R606', 'R607', 'R609', 'R610', 'R612', 'R613', 'R614', 'R615', 'R617', 'R618', 'R619', 'R620', 'R622', 'R624', 'R625', 'R626', 'R627', 'R628', 'R629', 'R630', 'R631', 'R632', 'R633', 'R634', 'R635', 'R636', 'R638', 'R642', 'R644', 'R645', 'R646', 'R647', 'R648', 'R649', 'R650', 'R652', 'R654', 'R657', 'R658', 'R660', 'R662', 'R668', 'R669', 'R671', 'R672', 'R673', 'R674', 'R676', 'R677', 'R678', 'R683', 'R684', 'R686', 'R689', 'R691', 'R693', 'R694', 'R696', 'R697', 'R698', 'R700', 'R701', 'R704', 'R706', 'R707', 'R710', 'R712', 'R713', 'R715', 'R716', 'R718', 'R719', 'R721', 'R724', 'R725', 'R728', 'R729', 'R730', 'R731', 'R733', 'R734', 'R737', 'R738', 'R739', 'R740', 'R743', 'R744', 'R745', 'R747', 'R748', 'R751', 'R755', 'R756', 'R757', 'R758', 'R759', 'R761', 'R762', 'R763', 'R767', 'R768', 'R770', 'R773', 'R774', 'R775', 'R776', 'R777', 'R779', 'R783', 'R785', 'R786', 'R789', 'R791', 'R795', 'R796', 'R797', 'R798', 'R800', 'R801', 'R802', 'R804', 'R805', 'R806', 'R808', 'R818', 'R819', 'R820', 'R822', 'R824', 'R826', 'R827', 'R829', 'R830', 'R831', 'R833', 'R835', 'R836', 'R838', 'R840', 'R841', 'R843', 'R844', 'R845', 'R847', 'R848', 'R849', 'R850', 'R851', 'R852', 'R853', 'R855', 'R858', 'R859', 'R860', 'R862', 'R863', 'R865', 'R867', 'R868', 'R869', 'R870', 'R874', 'R875', 'R876', 'R880', 'R881', 'R882', 'R884', 'R885', 'R886', 'R889', 'R891', 'R892', 'R893', 'R894', 'R895', 'R897', 'R900', 'R906', 'R908', 'R909', 'R911', 'R912', 'R914', 'R917', 'R918', 'R921', 'R922', 'R924', 'R925', 'R926', 'R927', 'R928', 'R929', 'R930', 'R932', 'R935', 'R937', 'R943', 'R944', 'R945', 'R946', 'R947', 'R948', 'R949', 'R951', 'R952', 'R953', 'R956', 'R957', 'R958', 'R959', 'R961', 'R964', 'R965', 'R966', 'R967', 'R968', 'R969', 'R971', 'R972', 'R974', 'R975', 'R976', 'R979', 'R981', 'R982', 'R983', 'R986', 'R987', 'R988', 'R990', 'R993', 'R994', 'R997']

ref = str(line).replace("R","")
print(ref)

它打印('2', '5', '6', '7', '10', '12', '13', '15', '18', '20', '21', '22', '23', '24', '26', '30', '31', '32', '33', ......等等

想转向integers(2,5,6,7,10,12,13,15,18...等等。我试过但没有好的结果。

标签： pythonpython-3.x

Answer 1

使用列表理解

line = [int(l.replace("R", "")) for l in line]

如果“R”总是第一个字符，你也可以这样做：

line = [int(l[1:]) for l in line]

根据提供的数据，上述两种解决方案都可以解决原始问题，如果您可能有无效数据，例如R32R上述将失败并引发ValueError异常。

为了防止这种情况，您可以使用以下方法丢弃任何不是整数的值：

item.isnumeric()
line = [int(l[1:]) for l in line if l[1:].isnumeric()]

您也可以使用正则表达式实现相同的目的

re.search('\d+', line[0]).group(0)
line = [int(re.search('\d+', l).group(0)) for l in line if re.search('\d+', l) is not None]

您将需要以下导入：

import re