用文本文件中的拆分和讀取行替換特定的列數據

Question

文字檔：Hardware.txt

Model   Year    Plate   Owner
Acer    (2014)  A12456  Nitik
Dell    (2015)  S45656  Dane

碼：

enterId =int(input("Enter record ID: "))
openingFile = open('Hardware.txt', 'r')
    for data in openingFile:
        abc = data.split()
        lines = openingFile.readlines()
        if lines[enterId] in lines:
            nameOwner = input("Enter new owner name: ")
            b = lines[enterId].replace(abc[3], nameOwner)
            f = open('Hardware.txt', 'w')
            f.write(b)
            f.close()
            print(lines[enterId] + ' has been updated.')
        else:
            print("There is no records with ID '" + str(enterId) + "'.")

我有一個文本文件Hardware.txt，我想更新所有者的名稱，但是我總是會遇到此錯誤：

IndexError: list index out of range

請幫我更新文本文件

Answer 1

使用熊貓，您只需閱讀文件（確保分隔符是制表符而不是空格）：

df = pd.read_csv("Hardware.txt", sep = "\t")

Model   Year    Plate   Owner
0   Acer    (2014)  A12456  Nitik
1   Dell    (2015)  S45656  Dane

然后更改名稱

df.loc[df.Owner == "Dane", "Owner"] = "New Owner"

    Model   Year    Plate   Owner
0   Acer    (2014)  A12456  Nitik
1   Dell    (2015)  S45656  New Owner

並保存

df.to_csv("Hardware.txt", sep="\t")

---

如果您不想/不能使用熊貓，請先閱讀文件並構建新數據：

id = 1 # just example; input your id
with open("Hardware.txt", "r") as f:
    content = f.readlines()
    lines = [x.strip().split("\t") for x in content]
    lines[id][-1] = "New Owner"

然后保存

with open("Hardware.txt", "w") as f:
    f.write("\n".join(["\t".join(x) for x in lines]))

請再次注意，我假設您的文件由tabs （ \\t ）分隔。 適應任何分隔它的地方（逗號，空格等）