为什么没有读取 .txt 列表的第一首歌曲？

Question

我的 .txt 文件的第一首歌是 Knife Party - Internet Friends 第二首歌是 Galantis - Louder, Harder, Better。但是我的代码只输出第二首歌。这是为什么？

##5.4 Jukebox
failinimi = input("Sisesta failinimi: ")
 
if failinimi == "jukebox.txt":
    failinimi = "ut/jukebox.txt"
elif failinimi == "80ndad.txt":
    failinimi = "ut/80ndad.txt"
elif failinimi == "eesti_muusika.txt":
    failinimi = "ut/eesti_muusika.txt"
else:
    failinimi = "ut/edm.txt"
 
album = open(failinimi, encoding = "UTF-8")

järg = 1

for lugu in album:
    album_sisu = album.readline()
    while album_sisu != "":
        järg += 1
        print("{}. {}".format(järg, album_sisu.strip()))
        album_sisu = album.readline()
album.close

>>> %Run ut.py
Sisesta failinimi: s
1. Galantis - Louder, Harder, Better

Answer 1

您已经逐行遍历文件行，但随后您还执行了 album.readline()，这将丢弃上一行。不需要那个：

with open(failinimi, encoding = "UTF-8") as album:

    järg = 1

    for lugu in album:
        if lugu != "":
            järg += 1
            print("{}. {}".format(järg, lugu.strip()))

如果可以使用则无需关闭文件with open(...

也可以简化文件名的处理：

failinimi = input("Sisesta failinimi: ")
 
if failinimi in ["jukebox.txt", "80ndad.txt", "eesti_muusika.txt"]:
    failinimi = "ut/" + failinimi 
else:
    failinimi = "ut/edm.txt"

为什么没有读取 .txt 列表的第一首歌曲？

Why isn't the first song of the .txt list being read?

python

for-loop

list

while-loop

readlines