Python保存到文件

Question

我想将一个字符串保存到一个名为python程序的文件中 Failed.py

这是我到目前为止:

myFile = open('today','r')

ips = {}

for line in myFile:
    parts = line.split(' ')
    if parts[1] == 'Failure':
        if parts[0] in ips:
            ips[pars[0]] += 1
        else:
            ips[parts[0]] = 0

for ip in [k for k, v in ips.iteritems() if v >=5]:
    #write to file called Failed.py

Answer 1

file = open('Failed.py', 'w')
file.write('whatever')
file.close()

这是一个更pythonic版本,它会自动关闭文件,即使包装块中有异常:

with open('Failed.py', 'w') as file:
    file.write('whatever')

Answer 2

您需要再次使用打开文件open(),但这次传递'w'表示您要写入文件.我还建议您使用with以确保在写完文件后关闭该文件.

with open('Failed.txt', 'w') as f:
    for ip in [k for k, v in ips.iteritems() if v >=5]:
        f.write(ip)

当然,您可能希望在输出中包含换行符或其他格式,但基本操作如上所述.

关闭文件的相同问题适用于阅读代码.这应该是这样的:

ips = {}
with open('today','r') as myFile:
    for line in myFile:
        parts = line.split(' ')
        if parts[1] == 'Failure':
            if parts[0] in ips:
                ips[pars[0]] += 1
            else:
                ips[parts[0]] = 0