This tutorial will help you create your first webapp using Python and the Flask microframework. We will cover the following topics: * What is Flask and why would you use it * Rendering your first response * Handling forms and POST data * Using SQLAlchemy * Writing your first RESTful API * Holding open a connection to emit updates * Testing your app with py.test * Deploying to Redhat's Openshift platform Familiarity with Python is assumed. A passing familiarity with Javascript is recommended by not essential. https://github.com/danni/linux-conf-au-flask-tute http://mirror.linux.org.au/linux.conf.au/2014/Thursday/87-Writing_your_first_web_app_using_Python_and_Flask_-_Danielle_Madeley.mp4

1. 
niugnepinn ad
inn ad/gro.emong.sgolb

ksalF dna nohtyP
gnisu ppa bew
tsrif ruoy gnitirW
flickr.com/photos/kevinomara/769
egnahcxofnI ,yeledaM elleinaD

2. tnemnorivne
ruoy pu tes ot EMDAER eht wolloF
etut-ksalf-ua-fnoc-xunil/innad/moc.buhtig//:tig
enolc tig
...ydaerla t'nevah uoy fI

3. mroftalp tfihsnepO s'tahdeR ot gniyolpeD
tset.yp htiw ppa ruoy gnitseT
setadpu time ot noitcennoc a nepo gnidloH
IPA lufTSER tsrif ruoy gnitirW
ymehclALQS gnisU
atad TSOP dna smrof gnildnaH
esnopser tsrif ruoy gniredneR
ti esu uoy dluow yhw dna ksalF si tahW

4. !gniddik tsuJ
igc tropmi

5. ?ksalF si tahw tsuJ
flickr.com/photos/markstos/35791

6. esnopser tsrif
ruoy gniredneR

7. #/s/i/n pto
!urbnev yhn
fo fakipr Fak
rm ls mot ls
ap=Fak_nm_)
p
ls(_ae_
i _nm_ = '_an_:
f _ae_ = _mi_'
aprndbgTu)
p.u(eu=re

8. #/s/i/n pto
!urbnev yhn
fo fakipr Fak
rm ls mot ls
ap=Fak_nm_)
p
ls(_ae_
@p.ot(/)
aprue''
dfidx)
e ne(:
""oeae"
"Hmpg""
rtr "el,lnxcn.u
eun Hlo iu.ofa"
i _nm_ = '_an_:
f _ae_ = _mi_'
aprndbgTu)
p.u(eu=re

9. yp tini ppabew nohtyp
txt stnemeriuqer r llatsni pip
elpmaxe tuokcehc tig
etavitca nib vne nohtyp

10. fo fakipr rdrc,rne_epae
rm ls mot eiet edrtmlt
@p.ot(/-eiet)
aprue'ardrc'
dfardrc(:
e _eiet)
""eietteue""
"Rdrc h sr"
rtr rdrc(OEUL
eun eietSM_R)
@p.ot(/-epae)
aprue'atmlt'
dfatmlt(:
e _epae)
""edrapg uigaJna tmlt""
"Rne
ae sn
ig2 epae"
rtr rne_epae'epaehm'
eun edrtmlt(tmlt.tl)

11. lmth.etalpmet
/setalpmet
yp.__tini__
/ppabew
:yrotcerid /setalpmet
s'eludom eht ni detacol
era setalpmet :tluafed yB

12. yp tini ppabew nohtyp
txt stnemeriuqer r llatsni pip
elpmaxe tuokcehc tig

13. sgnirts
yreuq gnildnah

14. fo fakipr rqet
rm ls mot eus
@p.ot(/)
aprue''
dfidx)
e ne(:
""euntenm qeyagmn""
"Rtr h ae ur ruet"
rtr rqetag[nm'
eun eus.rs'ae]

15. yllufTSER
ti gniod ro

16. @p.ot(/tm<n:k'
aprue'ie/itp>)
dfgtie(k:
e e_tmp)
""eunteie rfre t b p""
"Rtr h tm eerd o y k"
#..
.

17. rorrEailartsuAuxuniLosatsiluogAsgraitseuqer
ye seseaerp tnn rpittsg sxun Lseuqer
tn s
o ts lon sgra tseuqer
te gra t
uaKfnocixrniltue eilarteu sgra tseuqer
ua.fnoc.xunil=uo&ailartsuA+xuniL=uo?

18. atad TSOP
dna smrof gnildnah

19. fo fakipr rqet
rm ls mot eus
@p.ot(/)
aprue''
dfidx)
e ne(:
""euntenm PS vle"
"Rtr h ae OT au""
rtr rqetfr[nm'
eun eus.om'ae]

20. yrarbil smrof
a esu llits retteb ro
FTW ksalF llatsni pip

21. fo fakipr Fak rne_epae
rm ls mot ls, edrtmlt
fo faketwfipr Fr
rm ls.x.t mot om
fo wfrsipr TxFed
rm tom mot etil
casRgFr(om:
ls eoomFr)
"" sml rg fr""
"A ipe eo om"
eal=TxFed'mi'
mi
etil(Eal)
@p.ot(/eitr,mtos(GT,'OT)
aprue'rgse' ehd='E' PS')
dfgtrgse(:
e e_eitr)
""adetergsrto fr""
"Hnl h eitain om"
fr =RgFr(
om
eoom)
i fr.aiaeo_umt)
f omvldt_nsbi(:
rtr "ucs"
eun Sces
rtr rne_epae'epaehm' fr=om
eun edrtmlt(tmlt.tl, omfr)
i _nm_ = '_an_:
f _ae_ = _mi_'
apsce_e ='HSI RAL SCE'
p.ertky
TI S ELY ERT
aprndbgTu)
p.u(eu=re

22. fo faketwfipr Fr
rm ls.x.t mot om
fo wfrsipr TxFed vldtr
rm tom mot etil, aiaos
casRgFr(om:
ls eoomFr)
"" sml rg fr""
"A ipe eo om"
eal=TxFed'mi'
mi
etil(Eal
vldtr=vldtr.aaeu
aiaos(aiaosDtRq
vldtr.mi()
aiaosEal)

23. <ommto=ps"
fr ehd"ot>
{ fr.idntg)} { frCR. iprat #
{ omhde_a( } # o SF. motn! }
{ fr.mi.ae }
{ omeallbl }
{ fr.mi }
{ omeal }
{ i fr.mi.ros%
% f omealerr }
<l
u>
{ frerri fr.mi.ros%
% o ro n omealerr }
<i{ err}<l>
l>{ ro }/i
{ edo %
% nfr }
<u>
/l
{ edf%
% ni }
<nu tp=sbi"
ipt ye"umt>
<fr>
/om

24. ymehcla LQS
ymehclALQS ksalF llatsni pip

25. fo faketsllhm ipr SLlhm
rm ls.x.qacey mot QAcey
d =SLlhm(p)
b
QAceyap
casUe(bMdl:
ls srd.oe)
"" ue i m dtbs""
"A sr n y aaae"
_tbeae_='sr'
_alnm_
ues
i =d.ound.nee,piaykyTu)
d
bClm(bItgr rmr_e=re
#..
.

26. i _nm_ = "_an_:
f _ae_ = _mi_"
apcni[SLLHM_AAAEUI]=
p.ofg'QACEYDTBS_R'
'otrsl/uenm:asodlclotma
psgeq:/sraepswr@oahs/y
aprndbgTu)
p.u(eu=re

27. ue =d.eso.ur(sr
sr
bssinqeyUe)
.itrUe.sri = ue_d
fle(srue_d = sri)
.n(
oe)

28. etargiM ksalF llatsni pip
)cibmelA htiw(
snoitargim +

29. tpircS-ksalF
:ruoteD

30. fo fakipr Fak
rm ls mot ls
fo faketsrp ipr Mngr
rm ls.x.cit mot aae
ap=Fak_nm_)
p
ls(_ae_
mngr=Mngrap
aae
aae(p)
i _nm_ = '_an_:
f _ae_ = _mi_'
mngrrn)
aae.u(

31. redaoler htiw gnitratseR
ptth no gninnuR
revresnur yp tini nohtyp
tixe dna egassem pleh siht wohs
pleh
h
stnemugra lanoitpo
nur ppa e i revres tnempoleved ksalF eht snuR
revresnur
txetnoc noitacilppa ksalF edisni llehs nohtyP a snuR
llehs
revresnur llehs
stnemugra lanoitisop
revresnur llehs
h yp tini
egasu
yp tini nohtyp

32. fo fakipr Fak
rm ls mot ls
fo faketmgaeipr Mgae Mgaeomn
rm ls.x.irt mot irt, irtCmad
fo faketsrp ipr Mngr
rm ls.x.cit mot aae
fo faketsllhm ipr SLlhm
rm ls.x.qacey mot QAcey
ap=Fak_nm_)
p
ls(_ae_
mngr=Mngrap
aae
aae(p)
d =SLlhm(p)
b
QAceyap
mgae=Mgaeap d)
irt
irt(p, b
mngradcmad'b,Mgaeomn)
aae.d_omn(d' irtCmad

33. tini bd yp
snoitargim dda tig
tini ppabew nohtyp

34. edargpu bd yp tini ppabew nohtyp
snoisrev snoitargim dda tig
etargim bd yp tini ppabew nohtyp

35. smroF dna sledoM
:raf os rehtegot lla ti eiT

36. fo faketwfipr Fr
rm ls.x.t mot om
fo wfrsetsllhm.r ipr mdlfr
rm tom.x.qaceyom mot oe_om
casUe(bMdl:
ls srd.oe)
"" ue""
"A sr"
_tbeae_='sr'
_alnm_
ues
i =d.ound.nee,piaykyTu)
d
bClm(bItgr rmr_e=re
eal=d.ound.tig26,uiu=re
mi
bClm(bSrn(5) nqeTu)
UeFr =mdlfr(sr bs_ls=om
srom
oe_omUe, aecasFr)

37. fo faketwfipr Fr
rm ls.x.t mot om
fo wfrsipr vldtr
rm tom mot aiaos
fo wfrsetsllhm.r ipr mdlfr
rm tom.x.qaceyom mot oe_om
UeFr =mdlfr(sr bs_ls=om fedag=
srom
oe_omUe, aecasFr, il_rs{
'mi' {
eal:
'aiaos:[aiaosEal),
vldtr' vldtr.mi(]
}
,
}
)

38. fo fakipr Fak rqet rne_epae rdrc,ulfr
rm ls mot ls, eus, edrtmlt, eiet r_o
@p.ot(/eitr,mtos(GT,'OT)
aprue'rgse' ehd='E' PS')
dfrgse(:
e eitr)
""eitranwue""
"Rgse
e sr"
oj=Ue(
b
sr)
fr =UeFr(eus.om oj
om
sromrqetfr, b)
i fr.aiaeo_umt)
f omvldt_nsbi(:
fr.ouaeojoj
ompplt_b(b)
d.eso.d(b)
bssinadoj
d.eso.omt)
bssincmi(
rtr rdrc(r_o(rgse')
eun eietulfr'eitr)
rtr rne_epae'epaehm'
eun edrtmlt(tmlt.tl,
fr=om
omfr,
uesUe.ur.l()
sr=srqeyal)

39. )smaerts rehto dna(
stneve gnittimE

40. srotareneG
:ruoteD

41. dffbnci)
e ioac(:
""eeaea ifnt Fbncisqec""
"Gnrt n niie ioac eune"
a=0
b=1
wieTu:
hl re
yedb
il
c=a+b
a=b
b=c

42. frii fbnci)
o
n ioac(:
piti
rn
#WRIG wl nvred
ANN: il ee n!

43. dffbncin1)
e ioac(=0:
""eeaea neeet o teFbncisqe
"Gnrt n
lmns f h ioac eun
a=0
b=1
frii xag()
o
n rnen:
yedb
il
c=a+b
a=b
b=c

44. frii fbnci)
o
n ioac(:
piti
rn

45. !esnopser eht
time ot rotareneg
a esu nac eW

46. fo fakipr Rsos,sra_ihcnet
rm ls mot epne temwt_otx
@p.ot(/vnssra'
aprue'eet/tem)
dfgteet(:
e e_vns)
""eunasra o eet""
"Rtr
tem f vns"
@temwt_otx
sra_ihcnet
dfgnrt(:
e eeae)
""
"
Agnrtrta rtrsasnl JO-noe
eeao ht eun
ige SNecd
eet floe b a epyln.
vn, olwd y n mt ie
""
"
wieTu:
hl re
yedgteet)
il e_vn(
rtr Rsos(eeae)
eun epnegnrt(,
mmtp=tx/vn-tem)
ieye'eteetsra'

47. dedaerht
revresnur yp tini ppabew nohtyp
txt stnemeriuqer r llatsni pip
elpmaxe tuokcehc tig

48. !tiaw tuB

49. .hsinif reven lliw tseuqer enO
.stseuqer hsinif yllufecarg lliw ksalF

50. fo faketsrp ipr (aae,
rm ls.x.cit mot Mngr
Sre a SreCmad
evr s evromn
casSre(evromn)
ls evrSreCmad:
dfhnl(ef *rs *kag)
e adesl, ag, *wrs:
aprnig=Tu
p.unn
re
sprSre,sl)hnl(ag,*kag)
ue(evr ef.ade*rs *wrs
pit"htigdw"
rn Sutn on
aprnig=Fle
p.unn
as
mngradcmad'usre' Sre)
aae.d_omn(rnevr, evr

51. fo Qeeipr Qee
rm uu mot uu
qee=Qee)
uu
uu(
@temwt_otx
sra_ihcnet
dfgnrt(:
e eeae)
""
"
YedJO-noe eet
il SNecdd vns
""
"
wieaprnig
hl p.unn:
ty
r:
ie =qeegttmot1
tm
uu.e(ieu=)
yedfra_esgs[tm)
il omtmsae(ie]
qeets_oe) #etteqeeie
uu.akdn(
a h uu tm
ecp Epy
xet mt:
ps
as

52. edis rehto eht
daeha tpircsavaj :gninraw

53. <il>vn Sra<tte
tteEet tem/il>
<li=msae"
u d"esgs>
{ frmsaei gtfahdmsae( %
% o esg n e_lse_esgs) }
<i{ msae}<l>
l>{ esg }/i
{ edo %
% nfr }
<u>
/l
<citsc"sai/oe/qeyj"tp=tx/aacit>/cit
srp r=/ttcbwrjur.s ye"etjvsrp"<srp>
<citsc"sai/oe/qeyeetorej"tp=tx/aacit>/c
srp r=/ttcbwrjur.vnsuc.s ye"etjvsrp"<s
<cittp=tx/aacit>
srp ye"etjvsrp"
$dcmn)rayfnto( {
(ouet.ed(ucin)
$eetore{
.vnsuc(
lbl 'onc'
ae: cnet,
dtTp:'sn,
aaye jo'
ul 'eet/tem,
r: /vnssra'
msae fnto(aa {
esg: ucindt)
$ec(aa fnto( {
.ahdt, ucin)
$'l>,{tx:ti }.pedo'msae';
(<i'
et hs )apnT(#esgs)
};
)
}
}
)
};
)
<srp>
/cit

54. citatstcelloc yp tini ppabew nohtyp
oi rewob ptth B N
llatsni rewob
txt stnemeriuqer r llatsni pip
elpmaxe tuokcehc tig

55. stekcos-ksalf/ztierhtennek/moc.buhtig
ta kool nac uoy stekcosbew otni er'uoy fI

56. tset.yp
htiw gnitseT

57. yp.tsetfnoc/stset
ipr pts
mot yet
fo wbp ipr (p a fakap
rm eap mot ap s ls_p,
d a fakd)
b s ls_b
@yetfxuesoe'eso'
pts.itr(cp=ssin)
dfd(:
e b)
""e u tedtbs""
"St p h aaae"
fakapcni[TSIG]=Tu
ls_p.ofg'ETN'
re
fakapcni[SLLHM_AAAEUI]=..
ls_p.ofg'QACEYDTBS_R'
.
fakd.rpal)
ls_bdo_l(
fakd.raeal)
ls_bcet_l(
rtr fakd
eun ls_b
@yetfxuesoe'eso'
pts.itr(cp=ssin)
dfapd)
e p(b:
""e u teFakts cin""
"St p h ls et let"
rtr fakapts_let)
eun ls_p.etcin(

58. yp.sweiv_tset/stset
""
"
apadd aeaalbei tets soe
p n b r vial n h et cp
""
"
dfts_ne(p)
e etidxap:
""etIcngtteidxpg""
"Ts
a e h ne ae"
r =apgt''
v
p.e(/)
pitr.aa
rn vdt
asr 'tte'i r.aa
set <il> n vdt

59. stset tset yp
txt stnemeriuqer r llatsni pip
elpmaxe tuokcehc tig

60. tfihSnepO
ot gniyolped

61. nohtyp/srepoleved/moc.tfihsnepo.www
noitacilppa.noitacilppa.igsw
snur tfihSnepO stseuqer evres oT
yp.putes
level-pot ruoy snur tfihSnepO yolped oT

62. yp.putes
ipr o
mot s
fo stpol ipr stp fn_akgs
rm eutos mot eu, idpcae
POETRO =o.nio.e(OESITRP_I'
RJC_OT
sevrngt'PNHF_EODR,
o.ahdraeo.ahasah_fl_))
spt.inm(spt.bpt(_ie_)
wt oe(spt.onPOETRO,'eurmnstt) a fl_
ih pno.ahji(RJC_OT rqieet.x') s ie:
rqieet =[e.ti( frrqi fl_xedie(]
eurmns
rqsrp) o e n ie.ralns)
stpnm=eape,
eu(ae'xml'
vrin'.'
eso=00,
ato=Dnel Mdly,
uhr'aile aee'
ato_mi=dnel@aee.da'
uhreal'ailemdlyi.u,
ul'tp:/ihbcmdnilnxcn-ufaktt'
r=hts/gtu.o/an/iu-ofa-ls-ue,
dsrpin'xml dpo t OeSit,
ecito=Eape ely o pnhf'
isalrqie=eurmns
ntl_eursrqieet,
)

63. yp.noitacilppa/igsw
ipr o
mot s
ipr ss
mot y
#adlclcd
d oa oe
sspt.pedo.ahji(sevrn'PNHF_EODR])
y.ahapn(spt.ono.nio[OESITRP_I')
#iiils vrulevrnet
ntaie ita niomn
vrev=o.nio[OESITHMDR]+'yhn27vrev'
itn
sevrn'PNHF_OEI'
pto-./itn/
o.nio[PTO_G_AH' =o.ahji(itn,'i/yhn./iep
sevrn'YHNEGCCE]
spt.onvrev lbpto27st-a
vruln =o.ahji(itn,'i/ciaeti.y)
itaev
spt.onvrev bnatvt_hsp'
ty
r:
eefl(itaev dc(_ie_vruln)
xcievruln, it_fl_=itaev)
ecp IErr
xet Oro:
ps
as
#ipr adcniueWG apiain
mot n ofgr SI plcto
fo wbp ipr apa apiain
rm eap mot p s plcto

64. ap=Fak_nm_)
p
ls(_ae_
apsce_e =o.nio.e(OESITSCE_OE'
p.ertky
sevrngt'PNHF_ERTTKN,
'HSI RAL SCE'
TI S ELY ERT)
apcni[SLLHM_AAAEUI]=
p.ofg'QACEYDTBS_R'
o.nio.e(OESITPSGEQ_BUL,
sevrngt'PNHF_OTRSLD_R'
'qie//.apd'
slt:/./p.b)
ty
r:
apsai_odr=o.ahji(sevrn'PNHF_EODR] 'si
p.ttcfle
spt.ono.nio[OESITRP_I', wg'
ecp Kyro:
xet eErr
ps
as

65. retsam
elpmaxe a
elpmaxe ecrof
chr hsup tig
lqsergtsop c dda egdirtrac chr
tig elpmaxe tig
elpmaxe
hss chr dda etomer tig
tig on
nohtyp elpmaxe etaerc ppa chr
)tfihsnepO pu tes ev'uoy gnimussa(

66. lmth.etalpmet
lmth.stneve
setalpmet
yp.citatstcelloc
yp.sweiv
yp.sledom
yp.reganam
yp.__tini__
ppabew
yp.eganam
yp.putes

67. reggiB gnitteG
rehtruF gnioG

68. sweiv desab ssalc
fo fakvesipr MtoVe
rm ls.iw mot ehdiw
casUeAIMtoVe)
ls srP(ehdiw:
dfgtsl)
e e(ef:
ues=Ue.ur.l(
sr
srqeyal)
..
.
dfps(ef:
e otsl)
ue =Ue.rmfr_aarqetfr)
sr
srfo_omdt(eus.om
..
.
apadulrl(/sr/,
p.d_r_ue'ues'
ve_ucUeAIa_iw'sr')
iwfn=srP.sve(ues)

69. stnirpeulb
fo fakipr Bupit rne_epae
rm ls mot lern, edrtmlt
sml_ae=Bupit'ipepg' _nm_,
ipepg
lern(sml_ae, _ae_
tmlt_odr'epae'
epaefle=tmlts)
@ipepg.ot(/pg>)
sml_aerue'<ae'
dfso(ae:
e hwpg)
rtr rne_epae'ae/shm'%pg)
eun edrtmlt(pgs%.tl
ae
<pg>
/ae

70. stnirpeulb
fo fakipr Fak
rm ls mot ls
fo mdl.ipepg ipr sml_ae
rm ouesml_ae mot ipepg
ap=Fak_nm_)
p
ls(_ae_
aprgse_lern(ipepg)
p.eitrbupitsml_ae

71. 
flickr.com/photos/mau3ry/376364
niugnepinn ad
inn ad/gro.emong.sgolb
)-; nif

etut-ksalf-ua-fnoc-xunil/innad/moc.buhtig