python爬蟲爬取nn online的資料

寫乙個爬蟲爬取nn-online.org的np散射的pwa93的各分波的理論值

需要先安裝python3，python-pip3，selenium，geckodriver

python crawler**如下

# wang jianfeng  dec 14 2018

# python3
# install selenium first: pip3 install selenium
from selenium import webdriver 
from selenium.webdriver.common.by import by
from selenium.webdriver.common.keys import keys
from selenium.webdriver.support.ui import select
from selenium.common.exceptions import nosuchelementexception
from selenium.common.exceptions import noalertpresentexception
import unittest, time, re
from urllib.request import urlopen
# install geckodriver first
driver = webdriver.firefox(
)# driver is firefox
phaselist =([
'1s0'
,'3p0'
,'1p1'
,'3s1'
,'3p1'
,'3d1'
,'e1'
,'1d2'
,'3p2'
,'3d2'
,'3f2'
,'e2'
,'1f3'
,'3p2'
,'3p2'
,'3f2'
,'e3'
,'1g4'
,'3f4'
,'3g4'
,'3h4'
,'e4'
,'1h5'
,'3g5'
,'3h5'
,'3i5'
,'e5'])
url1 =
""url2 =
"&tmax="
url3 =
"&tint=0.01&ps="
nntype =
"np_"
txt =
".txt"
tmin =
0.01
tmax =
10.00
for phase in phaselist:
fw =
open
(nntype + phase + txt,
"w",encoding=
"utf-8"
)    fw.write(
"\b\b"
)    tmin =
0.01
tmax =
10while tmax <=
300:
url = url1 +
str(
round
(tmin,2)
)+ url2 +
str(tmax)
+ url3 + phase
driver.get(url)
html = driver.page_source
res = re.findall(r"pwa93\b\b\b(.+?)

)

由於有時nnonline返回的資料最後一行有時會有重複

再寫各python**重新編輯一下

**如下

phaselist =([

'1s0'
,'3p0'
,'1p1'
,'3s1'
,'3p1'
,'3d1'
,'e1'
,'1d2'
,'3p2'
,'3d2'
,'3f2'
,'e2'
,'1f3'
,'3p2'
,'3p2'
,'3f2'
,'e3'
,'1g4'
,'3f4'
,'3g4'
,'3h4'
,'e4'
,'1h5'
,'3g5'
,'3h5'
,'3i5'
,'e5'])
nntype =
"np_"
txt =
".txt"
dat =
".dat"
path =
"out/"
for phase in phaselist:
ii=0    fr =
open
(nntype + phase + txt,
"r",encoding=
"utf-8"
)    fw =
open
(path + nntype + phase + dat,
"w",encoding=
"utf-8"
)    line1 = fr.readline(8)
line2 = fr.readline(11)
line3 = fr.readline(
)while line1:
line11=line1
line22=line2
line1 = fr.readline(8)
line2 = fr.readline(11)
line3 = fr.readline(
)if line11 != line1:
fw.write(line11+line22+
'\b\n'
)            ii=ii+
1    fr.close(
)    fw.close(
)print
(phase +
" complete. line = "
+str
(ii)
)

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