Python 3.2 在 csv.DictReader 中跳过一行
使用 DictReader 时如何跳过 CSV 中的一行记录？
代码：
import csv
reader = csv.DictReader(open('test2.csv'))
# Skip first line
reader.next()
for row in reader:
print(row)
错误：
Traceback (most recent call last):
File "learn.py", line 3, in <module>
reader.next()
AttributeError: 'DictReader' object has no attribute 'next'
How do I skip a line of records in a CSV when using a DictReader?
Code:
import csv
reader = csv.DictReader(open('test2.csv'))
# Skip first line
reader.next()
for row in reader:
print(row)
Error:
Traceback (most recent call last):
File "learn.py", line 3, in <module>
reader.next()
AttributeError: 'DictReader' object has no attribute 'next'
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评论（3）
您可以使用
next(reader)来代替。来源： csv.DictReader 文档
You use
next(reader)instead.Source: csv.DictReader documentation
从 Python 2.6 开始，您应该使用 next(foo) 而不是 foo.next()。
Since Python 2.6 you should use next(foo) instead of foo.next().
在 python2 中，将方法称为
next()而不是__next__()被认为是一个错误next(obj)现在调用obj.__next__()就像str、len等一样。您通常不会直接调用 obj.__next__()，就像您想要对象的字符串表示形式时不会直接调用 obj.__str__() 一样。
方便了解您是否发现自己编写了不寻常的迭代器
It was considered a mistake in python2 to have the method called
next()instead of__next__()next(obj)now callsobj.__next__()just likestr,lenetc. as it should.You usually wouldn't call
obj.__next__()directly just as you wouldn't callobj.__str__()directly if you wanted the string representation of an object.Handy to know if you find yourself writing unusual iterators