Python-从文件中读取跳过行以#
尝试读取文件并根据行创建字典,跳过以#符号开头的行 文件示例:Python-从文件中读取跳过行以#,python,Python,尝试读取文件并根据行创建字典,跳过以#符号开头的行 文件示例: param1=val1 # here is comment 我的职能: def readFromFile(name): config = {} with open(name, "r") as f: for line in f.readlines(): li=line.lstrip() if not li.startswith("#")
param1=val1
# here is comment
我的职能:
def readFromFile(name):
config = {}
with open(name, "r") as f:
for line in f.readlines():
li=line.lstrip()
if not li.startswith("#"):
config[line.split('=')[0]] = line.split('=')[1].strip()
return config
我获取列表索引超出范围错误
但是!
如果我尝试跳过以符号“h”开头的行,例如,函数运行良好…您的代码运行良好,除了既不以
#
开头也不包含=
字符的行。通常,这些都是空行
拆分前测试=
字符:
def readFromFile(name):
config = {}
with open(name, "r") as f:
for line in f.readlines():
li=line.lstrip()
if not li.startswith("#") and '=' in li:
config[line.split('=')[0]] = line.split('=')[1].strip()
return config
您可以简化代码并使其成为dict理解:
def readFromFile(name):
with open(name, "r") as f:
return {k: v
for line in f
for (k, v) in (line.strip().split('=', 1),)
if '=' in line.strip() and line[:1] != '#'}
您可以直接在f
(文件对象)上循环;无需先使用f.readlines()
将所有行读入内存。我使用.split('=',1)
仅在等号上拆分一次。尝试:
def readFromFile(name):
config = {}
with open(name, "r") as f:
for line in f.readlines():
li = line.lstrip()
if not li.startswith("#") and '=' in li:
key, value = line.split('=', 1)
config[key] = value.strip()
return config
您可能有一个空行打断了拆分()您可以直接返回字典:
def readFromFile(name):
with open(name) as f:
return { line.split('=')[0]:line.split('=')[1].strip() for line in f \
if not line.startswith('#' and '=' in line }
必须有一些行上没有
=
,并且不以
开头返回{k:v.strip()表示k,v in(line.split('=',1)表示f中的行,如果不是line.startswith('.'和'='in line)}
,单次拆分操作。