我最近开始使用Python，并尝试使用熊猫操作CSV文件。但是，我现在遇到错误：> pandas.errors.ParserError：标记数据时出错。 C错误：第11行中应有3个字段，看到7
我尝试了不同的写入文件的技术，包括用另一个字符串替换而不是将随机数写入文件。
def Create():
if not isfile('Questions.csv'):
with open('Questions.csv', 'w') as csvFile:
Writer = csv.writer(csvFile)
Writer.writerow(["Question"])
Writer.writerow(["Ball dropped from", Rand1, "metres. Calculate time taken to reach floor?"])
Writer.writerow(["Ball dropped from", Rand2, "metres. What is its speed the instant it hits floor?"])
Writer.writerow(["Ball is projected directly upwards at", Rand3, "meters per second. What is the max height?"])
Writer.writerow(["Ball is projected directly upwards at", Rand4, "meters per second. How long does it take to reach the highest point?"])
Writer.writerow(["Initial velocity is", Rand5, ". Accelerating", Rand6, "ms. Calc velocity after", Rand7, "meters"])
Writer.writerow(["Ball rolled on surface (constant friction) at", Rand8, "meters per second. Stops after", Rand9, "m. Calculate deceleration"])
Writer.writerow(["Particle accelerating at", Rand10 ,"ms2 from", Rand11,"meters per second to", Rand12,". Calculate distance travelled"])
Writer.writerow(["Particle moving at", Rand13,"ms. Comes to rest", Rand14,"meters later. After how long did it stop?"])
def get_random_question(df: pd.DataFrame):
rand_index = random.randint(0, len(df)-1) # generate random index to get random question
question = df.loc[rand_index, 'Question'] # get the question for the random index
print(question)
return question, rand_index
Create()
Reader = pd.read_csv('Questions.csv')
df = pd.DataFrame(Reader, columns=[1, 2, 3, 4, 5, 6, 7])
Reader1 = pd.read_csv('Questions.csv')
print(Reader1)
get_random_question(Reader1)
（所有“ Rand1，Rand2”等变量都是随机的2个小数位）。 它应该从文件中输出一条随机行，但是相反，我收到许多错误消息；
>Traceback (most recent call last):
File "C:/Users/Charlie/PycharmProjects/CS-Project/JoshPan.py", line 89, in <module>
Reader = pd.read_csv('Questions.csv')
File "C:\Users\Charlie\PycharmProjects\CS-Project\venv\lib\site-packages\pandas\io\parsers.py", line 702, in parser_f
return _read(filepath_or_buffer, kwds)
File "C:\Users\Charlie\PycharmProjects\CS-Project\venv\lib\site-packages\pandas\io\parsers.py", line 435, in _read
data = parser.read(nrows)
File "C:\Users\Charlie\PycharmProjects\CS-Project\venv\lib\site-packages\pandas\io\parsers.py", line 1139, in read
ret = self._engine.read(nrows)
File "C:\Users\Charlie\PycharmProjects\CS-Project\venv\lib\site-packages\pandas\io\parsers.py", line 1995, in read
data = self._reader.read(nrows)
File "pandas\_libs\parsers.pyx", line 899, in pandas._libs.parsers.TextReader.read
File "pandas\_libs\parsers.pyx", line 914, in pandas._libs.parsers.TextReader._read_low_memory
File "pandas\_libs\parsers.pyx", line 968, in pandas._libs.parsers.TextReader._read_rows
File "pandas\_libs\parsers.pyx", line 955, in pandas._libs.parsers.TextReader._tokenize_rows
File "pandas\_libs\parsers.pyx", line 2172, in pandas._libs.parsers.raise_parser_error
pandas.errors.ParserError: Error tokenizing data. C error: Expected 3 fields in line 11, saw 7