python - 如何将 python 脚本的输出(一组 float )写入文本文件？

Question

我有一个 python 脚本，可以打印文本文件的前 105 列。所有值都是 float ，我想将列表写入文本文件。我尝试了下面的代码，但文本文件是空的。

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import sys

data = pd.read_csv('E:\Python_trials\Trial_codes\Lab_trial.txt', delimiter = '\t')
df = data.ix[:,:110]
print(df)

with open("test.txt", "w") as f:
    sys.stdout.writelines(str(f))
    f.flush()
    f.close()

Answer 1

您不写入f。您正在写入标准输出。尝试 f.write(...)

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import sys

data = pd.read_csv('E:\Python_trials\Trial_codes\Lab_trial.txt', delimiter = '\t')
df = data.ix[:,:110]
print(df)

with open("test.txt", "w") as f:
    f.write(str(f))
    # f.close() This is useless, as soon as the "with" is over, it automatically closes the file