Python 在csv文件中打印行？
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Print rows in csv file?
提问by Agent007
Here is a sample of my csv file:
这是我的 csv 文件示例：
1 Ryan Giggs ￡13.50 23 Manchester Utd
2 David Beckham ￡40.00 24 Manchester Utd
3 Michael Owen ￡22.00 22 Liverpool
4 Robbie Fowler ￡21.00 23 Leeds Utd
I have written this code with the intent to print out the first row:
我编写此代码的目的是打印出第一行：
import csv
with open("Footballers.csv") as f:
reader = csv.reader(f)
for row in reader:
print(row[1])
However this only print out the first(technically second) column like so:
然而，这只打印出第一列（技术上第二列），如下所示：
Ryan
David
Micheal
Robbie
How can I make it print out the first row like so?
我怎样才能让它像这样打印出第一行？
1 Ryan Giggs ￡13.50 23 Manchester Utd
回答by Moses Koledoye
Drop the for loop and use nextif you only intend to print the first row, as the foriterates on the object and will successively supply each row:
next如果您只想打印第一行，请删除 for 循环并使用，因为for迭代对象并将连续提供每一行：
with open("Footballers.csv") as f:
reader = csv.reader(f)
print(next(reader)[0]) # default separator is a comma so you only get one item in the row
The readerobject is an iterator and calling nexton it will provide the nextitem which in this case is the first row. Note that this advances the iterator and subsequent iterations on it will start from the second row.
该reader对象是一个迭代器，调用next它会提供下一项，在这种情况下是第一行。请注意，这会推进迭代器，后续迭代将从第二行开始。
回答by Max
row[1]gives the 2nd thing in row(because it starts counting at 0). You want all of row, separated by spaces. You can replace row[1]with " ".join(row)to fix it. " "is the thing we want each item to be separated by, and rowis the list we want to separate.
row[1]给出第二个东西row（因为它从 0 开始计数）。你想要所有的row，用空格分隔。您可以替换row[1]与" ".join(row)修复它。" "是我们希望每个项目被分隔的东西，row也是我们想要分隔的列表。
The full code would be
完整的代码将是
import csv
with open("Footballers.csv") as f:
reader = csv.reader(f)
for row in reader:
print(" ".join(row))
回答by SeedofWInd
Use join
使用连接
import csv
with open("Footballers.csv") as f:
reader = csv.reader(f)
for row in reader:
print(' '.join(row) )
