Add column to a specific CSV row using Python pandas -


i want merge rows in csv files matching id given dictionary.

i have dictionary: l= {2.80215: [376570], 0.79577: [378053], 22667183: [269499]}

i have csv file. 

                 b        c        d       2000-01-03 -0.59885 -0.18141 -0.68828 -0.77572 2000-01-04  0.83935  0.15993  0.95911 -1.12959 2000-01-05  2.80215 -0.10858 -1.62114 -0.20170 2000-01-06  0.71670 -0.26707  1.36029  1.74254 2000-01-07 -0.45749  0.22750  0.46291 -0.58431 2000-01-10 -0.78702  0.44006 -0.36881 -0.13884 2000-01-11  0.79577 -0.09198  0.14119  0.02668 2000-01-12 -0.32297  0.62332  1.93595  0.78024 2000-01-13  1.74683 -1.57738 -0.02134  0.11596

the output should :

            b        c        d          e      f      2000-01-03 -0.59885 -0.18141 -0.68828 -0.77572    0 2000-01-04  0.83935  0.15993  0.95911 -1.12959    0 2000-01-05  2.80215 -0.10858 -1.62114 -0.20170    376570  2000-01-06  0.71670 -0.26707  1.36029  1.74254    0 2000-01-07 -0.45749  0.22750  0.46291 -0.58431    0 2000-01-10 -0.78702  0.44006 -0.36881 -0.13884    0 2000-01-11  0.79577 -0.09198  0.14119  0.02668    378053 2000-01-12 -0.32297  0.62332  1.93595  0.78024    0 2000-01-13  1.74683 -1.57738 -0.02134  0.11596    0

i tried way:

import pandas data = panda.read_csv("thisfiel.csv")  data["f"] = data["b"].apply(lambda x: l[x])

but couldn't aimed results.

do this:

def getval(x):     try:         return l[x][0]      except keyerror:         return 0  data['f'] = data['b'].map(getval)

Comments

Post a Comment

Popular posts from this blog

Android layout hidden on keyboard show -

i have strange problem layout. when tap on edittext , keyboard shown edittext stay on bottom , when tap on to hide keyboard , keyboard hides , edittext go should when want input text. when tap again, keyboard shown , edittext goes down behind keyboard... <relativelayout android:layout_width="match_parent" android:layout_height="match_parent" > <scrollview android:layout_width="match_parent" android:layout_height="fill_parent" android:above="@+id/rl_commands"> <textview android:layout_width="match_parent" android:layout_height="wrap_content"/> </scrollview> <relativelayout android:layout_width="match_parent android:layout_height="24dp" android:id="@+id/rl_commands" android:alignparentbottom="true">
Read more

google app engine - 403 Forbidden POST - Flask WTForms -

i have flask application running on google app engine. trying submit form built using wtform , keep getting following error. 403 forbidden: don't have permission access requested resource. either read-protected or not readable server. location.html (part of code) <form method=post action="/home/location"> .... <button type="submit" class="btn btn-primary" value="submit"> directions </button> </form> main.py @app.route('/home/location', methods=['post', 'get']) def location(): form = cfcdirections.direction(request.form) print(request.method) if request.method == 'post' , form.validate(): print("after if") directions = cfcdirections() street_no = directions.no street = directions.street suburb = directions.suburb postcode = directions.postcode
Read more

c - Why would PK11_GenerateRandom() return an error -8023? -

i looking through internet trying find source of pk11_generaterandom() function see why function fail. have program uses function when moved new flavor of linux, fails after forking ( fork() ) since not believe there problem nss, suspect doing incorrectly disregarded in older versions of linux new 1 there issue. the openssl package same on 'good' , 'bad' server: openssl 0.9.8e-fips-rhel5 01 jul nss rpm differs though. 'good' has nss-3.12.2.0-2.el5 and bas has version nss-3.15.3-4.el5_10 the 'good' server uses quite obsolete linux: linux 2.6.18-128.el5 #1 smp wed jan 21 08:45:05 est 2009 x86_64 x86_64 x86_64 gnu/linux enterprise linux enterprise linux server release 5.3 (carthage) red hat enterprise linux server release 5.3 (tikanga) the 'bad' server newer: linux bad 2.6.18-371.4.1.el5 #1 smp wed jan 29 11:05:49 pst 2014 x86_64 x86_64 x86_64 gnu/linux oracle linux server release 5.10 red hat enterprise linux server release
Read more