Python 从文本文件中筛选行
我必须清除一个txt文件(test.txt),删除以“(”或空行开头的行,然后重命名它(test_ok.txt) 我使用此功能:Python 从文本文件中筛选行,python,Python,我必须清除一个txt文件(test.txt),删除以“(”或空行开头的行,然后重命名它(test_ok.txt) 我使用此功能: def clearfile(filename): for row in (open (filename, 'r')).readlines(): if row[0][0]<>'\n' and riga[0][0]<>'(' : out_file = open('%s_%s%s' %(os.path.
def clearfile(filename):
for row in (open (filename, 'r')).readlines():
if row[0][0]<>'\n' and riga[0][0]<>'(' :
out_file = open('%s_%s%s' %(os.path.splitext(filename)[0],'ok',os.path.splitext(os.path.basename(filename))[1]) , 'a')
out_file.write(riga)
out_file.close()
return out_file
def clearfile(filename):
with open (filename, 'r') as a, open('%s_%s%s' %(os.path.splitext(filename)[0],'ok',os.path.splitext(os.path.basename(filename))[1]) , 'a') as b:
for row in (a).readlines():
if row[0][0]!='\n' and row[0][0]!= '(' :
b.write(row)
b.close
为什么要多次打开/关闭文件
def clearfile(filename):
out_file = open('%s_%s%s' %(os.path.splitext(filename)[0], 'ok', os.path.splitext(os.path.basename(filename))[1]) , 'a')
for row in (open (filename, 'r')).readlines():
if row[0][0]!= '\n' and riga[0][0]!='(' :
out_file.write(riga)
out_file.close()
return out_file
为什么要多次打开/关闭文件
def clearfile(filename):
out_file = open('%s_%s%s' %(os.path.splitext(filename)[0], 'ok', os.path.splitext(os.path.basename(filename))[1]) , 'a')
for row in (open (filename, 'r')).readlines():
if row[0][0]!= '\n' and riga[0][0]!='(' :
out_file.write(riga)
out_file.close()
return out_file
试着这样做:
import os
def clear_and_move(infname, outfname):
with open(infname, 'r') as inf, open(outfname, 'w+') as outf:
# write new file as a copy of the first
# skip lines that contain only whitespace or start with '('
outf.writelines(line for line in inf
if line.strip() and not line.startswith('('))
# delete the original file
os.remove(infname)
试着这样做:
import os
def clear_and_move(infname, outfname):
with open(infname, 'r') as inf, open(outfname, 'w+') as outf:
# write new file as a copy of the first
# skip lines that contain only whitespace or start with '('
outf.writelines(line for line in inf
if line.strip() and not line.startswith('('))
# delete the original file
os.remove(infname)
“
”是去擦亮的,用“!=
”代替!如果你喜欢你的解决方案,你可以把它作为答案发布。
”是去擦亮的,用“!=
”代替!如果你喜欢你的解决方案,你可以把它作为答案发布。用语句处理文件。@AshwiniChaudhary你是对的,我真的应该学习这句话。谢谢你的帮助link.use语句用于处理文件。@AshwiniChaudhary你说得对,我真的应该学习这个语句。谢谢你的链接。