Python：根据第一列中的值提取excel单元格值

Question

我有某些 csv 文件，我正在使用 glob2 和 pandas 将它们读入 python。 我需要从下面的 C 列中提取值，仅当 b 列显示“制冷剂出口温度 [K]”时

我试过iloc和ix等，但它似乎不起作用。 任何帮助将不胜感激！

数据

• Run-No-73-2020-06-19-tubes.csv

XY plot,Circuit1
Xdata,Tube Nos [-],1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0
Xdata,Tube location [m],1.2192,2.4384,3.6576000000000004,4.8768,6.096,7.315200000000001,8.5344,9.7536,10.972800000000001,12.192,13.411200000000001,14.630400000000002
Ydata,Air Capacity [kW],128.65744079750252,557.5987436634471,611.6895245310138,867.1120934400609,880.6472263147532,646.1566629786406,353.37764226275385,701.1936628735328,277.16751076817246,108.71807383715976,63.93367637039801,48.20221501922388
Ydata,Refrigerant Capacity [kW],128.65744079750252,557.5987436634471,611.6895245310138,867.1120934400609,880.6472263147532,646.1566629786406,353.37764226275385,701.1936628735328,277.16751076817246,108.71807383715976,63.93367637039801,48.20221501922388
Ydata,Air inlet temperature [K],287.73443752665037,293.62898912497667,294.66152516549255,299.83,299.83,294.60231536327103,288.2535559573605,294.22475761072315,295.2360530869296,298.1351411379294,298.6581266925062,299.83
Ydata,Air outlet temperatre [K],285.32708407870246,287.0379660930306,287.42797830233997,289.49305040425156,289.37463082731745,287.0732716330538,284.26217089773894,286.65395928135194,290.452205072322,296.02210052208505,297.41128036299074,298.88573491490536
Ydata,Refrigerant inlet temperature [K],282.06866544516015,282.0408618731072,281.9684299160883,281.8358732724386,281.6523179628393,281.4372847400658,281.22161110938123,281.01919243469075,280.9596172656558,293.30146583088845,295.8248282516778,297.69635994028135
Ydata,Refrigerant outlet temperature [K],282.06977093355556,282.0444935822205,281.9831062264791,281.86312735576183,281.6982117574008,281.50315761520966,281.30284155488374,281.10905867497513,280.95805961068584,289.0699342169462,293.25764285917217,295.73050574117156
Ydata,Quality [-],0.03820153700913367,0.1530250152778651,0.27882672076711923,0.4571868288046692,0.6382423040304033,0.7711267397869899,0.8439261406082131,0.987421761736249,1.0,1.0,1.0,1.0
Ydata,StraightTube LiquidMass[kg],0.05200262747897293,0.02983742443485275,0.01807118982849003,0.011767572460956995,0.007626647877668588,0.005049182823989872,0.0035370092417716767,0.0018508212670238656,0.0,0.0,0.0,0.0
Ydata,StraightTube VaporMass[kg],0.0009532204387557756,0.0017475498837913807,0.002164836745766585,0.0023807604093886428,0.0025140130683821574,0.0025880160293021105,0.002623542541899748,0.0026655145389588163,0.008526537791069882,0.0025540256998253467,0.002470880850567846,0.0024191244047201727

XY plot,Circuit2
Xdata,Tube Nos [-],1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0
Xdata,Tube location [m],1.2192,2.4384,3.6576000000000004,4.8768,6.096,7.315200000000001,8.5344,9.7536,10.972800000000001,12.192,13.411200000000001,14.630400000000002
Ydata,Air Capacity [kW],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,Refrigerant Capacity [kW],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,Air inlet temperature [K],293.43398301796174,299.83,299.83,299.83,299.83,289.4338405287636,288.430909330496,286.34653983246506,288.73781639103476,293.1717652193233,299.2440633462531,299.83
Ydata,Air outlet temperatre [K],293.43398301796174,299.83,299.83,299.83,299.83,289.4338405287636,288.430909330496,286.34653983246506,288.73781639103476,293.1717652193233,299.2440633462531,299.83
Ydata,Refrigerant inlet temperature [K],293.43398301796174,299.83,299.83,299.83,299.83,289.4338405287636,288.430909330496,286.34653983246506,288.73781639103476,293.1717652193233,299.2440633462531,299.83
Ydata,Refrigerant outlet temperature [K],293.43398301796174,299.83,299.83,299.83,299.83,289.4338405287636,288.430909330496,286.34653983246506,288.73781639103476,293.1717652193233,299.2440633462531,299.83
Ydata,Quality [-],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,StraightTube LiquidMass[kg],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,StraightTube VaporMass[kg],0,0,0,0,0,0,0,0,0,0,0,0

XY plot,Circuit3
Xdata,Tube Nos [-],1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0
Xdata,Tube location [m],1.2192,2.4384,3.6576000000000004,4.8768,6.096,7.315200000000001,8.5344,9.7536,10.972800000000001,12.192,13.411200000000001,14.630400000000002
Ydata,Air Capacity [kW],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,Refrigerant Capacity [kW],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,Air inlet temperature [K],287.88204114582396,289.91141130063556,294.61453876921416,299.83,299.83,299.2938853081713,294.28056073119944,297.0515077217529,299.2503110085603,298.670284733177,299.83,299.83
Ydata,Air outlet temperatre [K],287.88204114582396,289.91141130063556,294.61453876921416,299.83,299.83,299.2938853081713,294.28056073119944,297.0515077217529,299.2503110085603,298.670284733177,299.83,299.83
Ydata,Refrigerant inlet temperature [K],287.88204114582396,289.91141130063556,294.61453876921416,299.83,299.83,299.2938853081713,294.28056073119944,297.0515077217529,299.2503110085603,298.670284733177,299.83,299.83
Ydata,Refrigerant outlet temperature [K],287.88204114582396,289.91141130063556,294.61453876921416,299.83,299.83,299.2938853081713,294.28056073119944,297.0515077217529,299.2503110085603,298.670284733177,299.83,299.83
Ydata,Quality [-],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,StraightTube LiquidMass[kg],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,StraightTube VaporMass[kg],0,0,0,0,0,0,0,0,0,0,0,0

XY plot,Circuit4
Xdata,Tube Nos [-],1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0
Xdata,Tube location [m],1.2192,2.4384,3.6576000000000004,4.8768,6.096,7.315200000000001,8.5344,9.7536,10.972800000000001,12.192,13.411200000000001,14.630400000000002
Ydata,Air Capacity [kW],324.2858791148862,187.56138792652828,362.28690540388317,866.2567716068745,877.8584726868849,892.8778669932161,529.1404732816158,453.0391619907644,445.1486125659339,152.94340369686785,91.351868914147,54.75146756270347
Ydata,Refrigerant Capacity [kW],324.2858791148862,187.56138792652828,362.28690540388317,866.2567716068745,877.8584726868849,892.8778669932161,529.1404732816158,453.0391619907644,445.1486125659339,152.94340369686785,91.351868914147,54.75146756270347
Ydata,Air inlet temperature [K],288.1590828162914,289.93677040476643,289.44979570175497,299.83,299.83,299.83,291.9408286275717,290.06672195234455,294.8565822186613,298.4022861008676,299.2938853081713,299.83
Ydata,Air outlet temperatre [K],284.72202741861884,286.4067569809361,285.2082843351167,289.5005139766707,289.3990777584913,289.2671190010668,285.85267368305824,284.93673749615846,288.93271151332686,295.4318816600308,297.510368265675,298.7576981570571
Ydata,Refrigerant inlet temperature [K],282.06866544516015,282.02719198728965,281.95266879081737,281.84745046825657,281.6901914446278,281.4858829984123,281.26770038005645,281.0618771179481,280.99028255144793,291.5825839488892,295.23570317716934,297.40536251483957
Ydata,Refrigerant outlet temperature [K],282.06977093355556,282.0346477254171,281.9638739596611,281.8659820183775,281.7268495400302,281.5419285349685,281.3445718679992,281.1516326061901,280.9821724860505,285.8001355080917,291.60532576075934,295.1784876660862
Ydata,Quality [-],0.07836040599914024,0.11725185759585831,0.19202327568607663,0.3701633340183372,0.5506124758982709,0.7340122710481893,0.84277708195303,0.9357333979727313,1.0,1.0,1.0,1.0
Ydata,StraightTube LiquidMass[kg],0.04238172211675523,0.029472194212287403,0.022564133919384152,0.014807407051891949,0.00939233515603143,0.006008494836946007,0.0038170624296599296,0.002292504024124635,0.0,0.0,0.0,0.0
Ydata,StraightTube VaporMass[kg],0.0012986096426605906,0.0017599550523208114,0.002003169989855606,0.002273304655373232,0.002454386659648168,0.002558149670659315,0.0026174966483184167,0.0026537478458813412,0.003954875962265497,0.0026113531381152925,0.0024961462401893787,0.0024264644023461934

XY plot,Circuit5
Xdata,Tube Nos [-],1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0
Xdata,Tube location [m],1.2192,2.4384,3.6576000000000004,4.8768,6.096,7.315200000000001,8.5344,9.7536,10.972800000000001,12.192,13.411200000000001,14.630400000000002
Ydata,Air Capacity [kW],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,Refrigerant Capacity [kW],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,Air inlet temperature [K],299.83,299.83,299.83,299.83,299.83,299.83,299.83,298.5388137812701,291.82719189861336,297.2476283681938,294.66525693254084,299.83
Ydata,Air outlet temperatre [K],299.83,299.83,299.83,299.83,299.83,299.83,299.83,298.5388137812701,291.82719189861336,297.2476283681938,294.66525693254084,299.83
Ydata,Refrigerant inlet temperature [K],299.83,299.83,299.83,299.83,299.83,299.83,299.83,298.5388137812701,291.82719189861336,297.2476283681938,294.66525693254084,299.83
Ydata,Refrigerant outlet temperature [K],299.83,299.83,299.83,299.83,299.83,299.83,299.83,298.5388137812701,291.82719189861336,297.2476283681938,294.66525693254084,299.83
Ydata,Quality [-],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,StraightTube LiquidMass[kg],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,StraightTube VaporMass[kg],0,0,0,0,0,0,0,0,0,0,0,0

XY plot,Circuit6
Xdata,Tube Nos [-],1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0
Xdata,Tube location [m],1.2192,2.4384,3.6576000000000004,4.8768,6.096,7.315200000000001,8.5344,9.7536,10.972800000000001,12.192,13.411200000000001,14.630400000000002
Ydata,Air Capacity [kW],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,Refrigerant Capacity [kW],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,Air inlet temperature [K],299.27111679864606,298.7099228896796,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83
Ydata,Air outlet temperatre [K],299.27111679864606,298.7099228896796,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83
Ydata,Refrigerant inlet temperature [K],299.27111679864606,298.7099228896796,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83
Ydata,Refrigerant outlet temperature [K],299.27111679864606,298.7099228896796,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83,299.83
Ydata,Quality [-],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,StraightTube LiquidMass[kg],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,StraightTube VaporMass[kg],0,0,0,0,0,0,0,0,0,0,0,0

XY plot,Circuit7
Xdata,Tube Nos [-],1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0
Xdata,Tube location [m],1.2192,2.4384,3.6576000000000004,4.8768,6.096,7.315200000000001,8.5344,9.7536,10.972800000000001,12.192,13.411200000000001,14.630400000000002
Ydata,Air Capacity [kW],128.65744079750252,557.5987436634471,611.6895245310138,867.1120934400609,880.6472263147532,646.1566629786406,353.37764226275385,706.0813868942156,200.2466168775888,147.88949624482066,88.27912430075331,52.93883092776015
Ydata,Refrigerant Capacity [kW],128.65744079750252,557.5987436634471,611.6895245310138,867.1120934400609,880.6472263147532,646.1566629786406,353.37764226275385,706.0813868942156,200.2466168775888,147.88949624482066,88.27912430075331,52.93883092776015
Ydata,Air inlet temperature [K],287.73443752665037,293.62898912497667,294.66152516549255,299.83,299.83,294.60231536327103,288.2535559573605,294.3878975591642,297.14701644377396,298.45132413428803,299.31189707690294,299.83
Ydata,Air outlet temperatre [K],285.32708407870246,287.0379660930306,287.42797830233997,289.49305040425156,289.37463082731745,287.0732716330538,284.26217089773894,286.7219448049956,293.2809052230303,295.5780709957955,297.58807197867196,298.7931286681128
Ydata,Refrigerant inlet temperature [K],282.06866544516015,282.0408618731072,281.9684299160883,281.8358732724386,281.6523179628393,281.4372847400658,281.22161110938123,281.01919243469075,288.16469237130696,291.8576157769132,295.3910405496458,297.4858038206114
Ydata,Refrigerant outlet temperature [K],282.06977093355556,282.0444935822205,281.9831062264791,281.86312735576183,281.6982117574008,281.50315761520966,281.30284155488374,281.10905867497513,281.0434889052896,286.2349653756815,291.8727637443179,295.3290097795765
Ydata,Quality [-],0.03820153700913367,0.1530250152778651,0.27882672076711923,0.4571868288046692,0.6382423040304033,0.7711267397869899,0.8439261406082131,0.9884185099398954,1.0,1.0,1.0,1.0
Ydata,StraightTube LiquidMass[kg],0.05200262747897293,0.02983742443485275,0.01807118982849003,0.011767572460956995,0.007626647877668588,0.005049182823989872,0.0035370092417716767,0.0018421672256667635,0.0,0.0,0.0,0.0
Ydata,StraightTube VaporMass[kg],0.0009532204387557756,0.0017475498837913807,0.002164836745766585,0.0023807604093886428,0.0025140130683821574,0.0025880160293021105,0.002623542541899748,0.002665814059327943,0.0028050769807330656,0.0025957289487024676,0.002484614869749683,0.00241726455960469

XY plot,Circuit8
Xdata,Tube Nos [-],1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0
Xdata,Tube location [m],1.2192,2.4384,3.6576000000000004,4.8768,6.096,7.315200000000001,8.5344,9.7536,10.972800000000001,12.192,13.411200000000001,14.630400000000002
Ydata,Air Capacity [kW],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,Refrigerant Capacity [kW],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,Air inlet temperature [K],293.43398301796174,299.83,299.83,299.83,299.83,289.4338405287636,288.430909330496,286.34653983246506,288.7280832378127,293.1930369964496,299.31189707690294,299.83
Ydata,Air outlet temperatre [K],293.43398301796174,299.83,299.83,299.83,299.83,289.4338405287636,288.430909330496,286.34653983246506,288.7280832378127,293.1930369964496,299.31189707690294,299.83
Ydata,Refrigerant inlet temperature [K],293.43398301796174,299.83,299.83,299.83,299.83,289.4338405287636,288.430909330496,286.34653983246506,288.7280832378127,293.1930369964496,299.31189707690294,299.83
Ydata,Refrigerant outlet temperature [K],293.43398301796174,299.83,299.83,299.83,299.83,289.4338405287636,288.430909330496,286.34653983246506,288.7280832378127,293.1930369964496,299.31189707690294,299.83
Ydata,Quality [-],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,StraightTube LiquidMass[kg],0,0,0,0,0,0,0,0,0,0,0,0
Ydata,StraightTube VaporMass[kg],0,0,0,0,0,0,0,0,0,0,0,0

Answer 1

首先，我会检查以确保您的 csv 正确加载。 使用文件“C:\\Users\\path\\to”的完整文件路径和文件“csv.csv”的名称更改“C:\\Users\\path\\to\\csv.csv”：

import pandas as pd
pdDf = pd.read_csv('C:\Users\path\to\csv.csv')
print(pdDf.head(3))

看来您会遇到麻烦，需要在第一行添加标题，并删除 csv 中的空白行。 如果可能，您也可以尝试避免使用任何空白单元格，因此将表格中间的所有空白单元格替换为 0 可能会有所帮助。

假设您在单元格 B1 中保留“Circuit1”作为标题，并在单元格 C1 中添加“Temp1”作为标题。 然后，您只需添加：

filteredDf = pdDf[pdDf['Circuit1']=='Refrigerant outlet temperature [K]']
refOutTemp = filteredDf[['Circuit1','Temp1']]
print(refOutTemp.head(3))

然后将其保存到具有不同名称的 csv...

refOutTemp.to_csv(r'C:\Users\path\to\Newcsv.csv', index = False, header=True)