如何從文本文件中捕獲非註釋的代碼行？

Question

我有一個是這樣的一個文本文件：

#<[_MOUNTING] Recessed 
#<[_FAMILY] RT8 
#<[_PRODUCTID] cecf8545-0ff3-4d4a-bafd-dbb156bab282 
#<[_BALLAST_TYPE] ELECTRONIC 
#<[_FIXTURE_TYPE] 2X4 Volumetric 
#<[_TERCAT] Recessed, Linear 
#<[_TER] 72 
# 54.8 watt luminaire, lamp*ballast factor = 1 

void brightdata 2RT8S_2_32_LP735_dist 
23 flatcorr C:/rm/ies/2RT8S_2_32_LP735.dat source.cal src_phi4 src_theta -i 1 -t 3.2 0.9 2.9 -i 0 -t 2.44 0.0 0.0 -i 0 -t -0.0 1.83 0.0 
0 
1   1.54935 


# c:\daysim\bin\xform -n a0.1 -t 3.2 0.9 2.9 -i 0 -t 2.44 0.0 0.0 -i 1 -t -0.0 1.83 0.0 
# c:\daysim\bin\ies2rad -dm -m 0.95 -t white -o C:/rm/ies/2RT8S_2_32_LP735 
# Dimensions in meters 
#<[_PRODUCTID] cecf8545-0ff3-4d4a-bafd-dbb156bab282 
#<[_BALLAST_TYPE] ELECTRONIC 
#<[_FIXTURE_TYPE] 2X4 Volumetric 
#<[_TERCAT] Recessed, Linear 
#<[_TER] 72 
# 54.8 watt luminaire, lamp*ballast factor = 1 

void brightdata 2RT8S_2_32_LP735_dist 
23 flatcorr C:/rm/ies/2RT8S_2_32_LP735.dat source.cal src_phi4 src_theta -i 1 -t 3.2 0.9 2.9 -i 0 -t 2.44 0.0 0.0 -i 1 -t -0.0 1.83 0.0 
0 
1   1.54935 

2RT8S_2_32_LP735_dist light 2RT8S_2_32_LP735_light 
0 
0 
3     1     1     1 

# c:\daysim\bin\xform -n a0.2 -t 3.2 0.9 2.9 -i 0 -t 2.44 0.0 0.0 -i 2 -t -0.0 1.83 0.0 
# c:\daysim\bin\ies2rad -dm -m 0.95 -t white -o C:/rm/ies/2RT8S_2_32_LP735 
# Dimensions in meters 
#<IESNA:LM-63-2002 
#<[TEST] LTL18481 
#<[TESTDATE] 1/28/2010 

我想捕捉的代碼不註釋行，並將其寫入到單獨的文件。缺乏一個更好的詞，會是什麼呢，這是最「pythonic」的方式來做到這一點？我已經做到了，但是我不認爲我的方式非常優雅。我的代碼如下。

from __future__ import print_function 
lumdict={} 
counter = 1 
b =False 

with open(radFile) as rad: 
    a=[] #Create a temp list to capture noncommented data. 
    for lines in rad: 

     if not lines.startswith("#"): 
      a.append(lines) #Add non commented data to templist 
     else: 
      if len(a)>0: 
       lumdict[counter]=a #Capture non commented data into a dictionary. 
       b=a[:] #This is the list meant to be used for the last bit of non commented data. 
       a=[] 
       counter +=1 
    else: 
     lumdict[counter]=b 


for zones,radvalues in lumdict.items(): #Write the dictionary to individual files. 
    with open(r'd:\zones\{}.rad'.format(zones),'w') as zonefile: 
     for lines in radvalues: 
      print(lines,file=zonefile,end="") 

Answer 1

你可以寫在迭代到文件，而不是創建一個字典，沿着線的東西：

from __future__ import print_function 

with open(radFile) as rad: 
    counter = 0 
    zonefile = open(r'd:\zones\{}.rad'.format(counter),'w') 
    for line in rad: 
     if not line.startswith("#"): 
      if zonefile.closed: 
       counter += 1 
       zonefile = open(r'd:\zones\{}.rad'.format(counter),'w') 
      print(line, file=zonefile) 
     else: 
      zonefile.close() 
    zonefile.close() 

Answer 2

那麼，我知道你正在尋求一個python工具。但作爲一個替代方案，你可以選擇使用shell命令要做到這一點：

grep -v '^#' foo.txt > bar.txt