本文介绍了使用文字字符串插值或 f 字符串时出现 SyntaxError的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
限时送ChatGPT账号..尝试读取 csv 文件并打印内容:
with open('C:\test.csv') 作为 csvfile:csv_reader = csv.reader(csvfile, delimiter=',')行数 = 0对于 csv_reader 中的行:如果 line_count == 0:打印(f'列名是{", ".join(row[0])}')行数 += 1别的:print(f'\t{row[0]} 在 {row[2]} 的 {row[1]} 部门工作.')
我收到以下错误:
SyntaxError: 无效语法PS C:\users\XXX\documents\python>蟒蛇读CSV.py文件ReadCSV.py",第 12 行打印(f'列名是{", ".join(row[0])}')^语法错误:无效语法
解决方案 文字字符串插值或f-strings"仅在 Python3.6 中引入.
看:
您的代码在 Python3.6 上运行良好.
如果您使用的不是 Python3.6(及更高版本),则会出现语法错误.
$ python3.6 -V蟒蛇 3.6.7$ python3.6 readcsv.py列名是 c, o, l, 11 在 3 的 2 部门工作.4 个在 6 个部门的 5 个部门工作.
<小时>
$ python3 -V蟒蛇 3.5.2$ python3 readcsv.py文件readcsv.py",第 9 行打印(f'列名是{", ".join(row[0])}')^语法错误:无效语法
<小时>
$ python -V蟒蛇 2.7.12$ python readcsv.py文件readcsv.py",第 9 行打印(f'列名是{", ".join(row[0])}')^语法错误:无效语法
Trying to read a csv file and print contents:
with open('C:\test.csv') as csvfile:
csv_reader = csv.reader(csvfile, delimiter=',')
line_count = 0
for row in csv_reader:
if line_count == 0:
print(f'Column names are {", ".join(row[0])}')
line_count += 1
else:
print(f'\t{row[0]} works in the {row[1]} department in {row[2]}.')
I received following error:
SyntaxError: invalid syntax
PS C:\users\XXX\documents\python> python ReadCSV.py
File "ReadCSV.py", line 12
print(f'Column names are {", ".join(row[0])}')
^
SyntaxError: invalid syntax
解决方案
Literal String Interpolation or "f-strings" was only introduced in Python3.6.
See:
https://www.python/dev/peps/pep-0498/
Your code works fine on Python3.6.
If you are not using Python3.6 (and up), you will get a syntax error.
$ python3.6 -V
Python 3.6.7
$ python3.6 readcsv.py
Column names are c, o, l, 1
1 works in the 2 department in 3.
4 works in the 5 department in 6.
$ python3 -V
Python 3.5.2
$ python3 readcsv.py
File "readcsv.py", line 9
print(f'Column names are {", ".join(row[0])}')
^
SyntaxError: invalid syntax
$ python -V
Python 2.7.12
$ python readcsv.py
File "readcsv.py", line 9
print(f'Column names are {", ".join(row[0])}')
^
SyntaxError: invalid syntax
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