从第2行读取文件或跳过标题行

Question

如何跳过标题行并开始从第2行读取文件？

Answer 1

with open(fname) as f: 
    next(f) 
    for line in f: 
     #do something 

Answer 2

f = open(fname,'r') 
lines = f.readlines()[1:] 
f.close() 

Answer 3

f = open(fname).readlines() 
firstLine = f.pop(0) #removes the first line 
for line in f: 
    ... 

Answer 4

如果切片可以在迭代器工作...

from itertools import islice 
with open(fname) as f: 
    for line in islice(f, 1, None): 
     pass 

Answer 5

如果你想在第一线，然后要对文件执行某些操作此代码将很有帮助。

with open(filename , 'r') as f: 
    first_line = f.readline() 
    for line in f: 
      # Perform some operations 

Answer 6

with open('old.csv', 'r') as f, open('new.csv', 'w') as ff: 
    first_line = f.readline() 
    for line in f: 
     line = line.translate({ord(i):None for i in 'abcd'}) 
     ff.write(line) 
    ff.seek(0) 
    ff.write(first_line)