Python 如何在写入数据帧之前向csv添加详细信息

我需要写入一个csv文件，该文件有3-5行（行）关于该文件的详细信息，然后是3行空行，然后才能附加到数据帧

下面是文件的外观。（注意：带有“#”的行是用于演示的注释）

以下是我到目前为止所做的尝试：

import pandas as pd

file_name = 'my_csv_file.csv'

df1 = pd.Dataframe({"some details":})
df2 = pd.DataFrame({"some more details":})
df3 = pd.DataFrame({"some details that were not covered in last two details'})
df4 = pd.DataFrame({"\n\n\n\":}) #write 3 blank lines
df5 = pd.DataFrame({"A":[1231 1232 1233 1234]
                    "B":[1241 1242 1243 1244]
                   "headers":[abc abd abe abf] }

df1.to_csv(file_name, sep=';', mode='a', index=False)
df2.to_csv(file_name, sep=';', mode='a', index=False)
df3.to_csv(file_name, sep=';', mode='a', index=False)
df4.to_csv(file_name, sep=';', mode='a', index=False)
df5.to_csv(file_name, sep=';', mode='a', index=False)

---

但这似乎不起作用。有人能帮我吗？

你可以使用一个字符串模板，然后离开

{}

将数据帧插入。整个故事变得更具可读性。有用的操作：1）对多行字符串使用

“

”，2）使用注释来记住为什么要这样做

import pandas as pd

df = pd.DataFrame({
    "A": [1231, 1232, 1233, 1234],
    "B": [1241, 1242, 1243, 1244],
    "C": ['abc', 'abd', 'abe', 'abf']
})

# Setups the template that the client requested with 3-5 rows of information 
# Followed by 3 blank rows and the dataframe
template = """\
some details
some more details
some details that were not covered in last two details



{}"""

with open('test.txt', 'w') as fp:
    fp.write(template.format(df.to_csv(index=False)))

test.csv：

some details
some more details
some details that were not covered in last two details


A,B,C
1231,1241,abc
1232,1242,abd
1233,1243,abe
1234,1244,abf

注意：来自用户Taras的数据

some details
some more details
some details that were not covered in last two details


A,B,C
1231,1241,abc
1232,1242,abd
1233,1243,abe
1234,1244,abf