Python将单词的首字母转变成大写

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方法一

with open('data.txt') as inf,open('out.txt','w') as outf:
    for line in inf:
        outf.write(" ".join([word.capitalize() for word in line.split()]))

方法二

with open('data.txt') as inf,open('out.txt','w') as outf:
    for line in inf:
        print(*[word.capitalize() for word in line.split()],file=outf)