Question

如何在python脚本中获取文件名和行号。

我们从异常回溯中获取的文件信息。在这种情况下，不会引发异常。

Answer 1

感谢mcandre，答案是：

from inspect import currentframe, getframeinfo

frameinfo = getframeinfo(currentframe())

print frameinfo.filename, frameinfo.lineno

Answer 2

您是否使用currentframe().f_back取决于您是否使用了功能与否。

直接致电检查：

from inspect import currentframe, getframeinfo

cf = currentframe()
filename = getframeinfo(cf).filename

print "This is line 5, python says line ", cf.f_lineno 
print "The filename is ", filename

调用一个能为你完成的功能：

from inspect import currentframe

def get_linenumber():
    cf = currentframe()
    return cf.f_back.f_lineno

print "This is line 7, python says line ", get_linenumber()

Answer 3

在常用文件中使用时很方便 - 打印调用者的文件名，行号和功能：

import inspect
def getLineInfo():
    print(inspect.stack()[1][1],":",inspect.stack()[1][2],":",
          inspect.stack()[1][3])

Answer 4

文件名：__file__或sys.argv[0]
行：inspect.currentframe().f_lineno（不是上面提到的inspect.currentframe（）。f_back.f_lineno）

Answer 5

最好还使用sys -

print dir(sys._getframe())
print dir(sys._getframe().f_lineno)
print sys._getframe().f_lineno

输出结果为：

['__class__', '__delattr__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', 'f_back', 'f_builtins', 'f_code', 'f_exc_traceback', 'f_exc_type', 'f_exc_value', 'f_globals', 'f_lasti', 'f_lineno', 'f_locals', 'f_restricted', 'f_trace']
['__abs__', '__add__', '__and__', '__class__', '__cmp__', '__coerce__', '__delattr__', '__div__', '__divmod__', '__doc__', '__float__', '__floordiv__', '__format__', '__getattribute__', '__getnewargs__', '__hash__', '__hex__', '__index__', '__init__', '__int__', '__invert__', '__long__', '__lshift__', '__mod__', '__mul__', '__neg__', '__new__', '__nonzero__', '__oct__', '__or__', '__pos__', '__pow__', '__radd__', '__rand__', '__rdiv__', '__rdivmod__', '__reduce__', '__reduce_ex__', '__repr__', '__rfloordiv__', '__rlshift__', '__rmod__', '__rmul__', '__ror__', '__rpow__', '__rrshift__', '__rshift__', '__rsub__', '__rtruediv__', '__rxor__', '__setattr__', '__sizeof__', '__str__', '__sub__', '__subclasshook__', '__truediv__', '__trunc__', '__xor__', 'bit_length', 'conjugate', 'denominator', 'imag', 'numerator', 'real']
14

Answer 6

import inspect    

file_name = __FILE__
current_line_no = inspect.stack()[0][2]
current_function_name = inspect.stack()[0][3]

#Try printing inspect.stack() you can see current stack and pick whatever you want

Answer 7

只是为了贡献，

python中有一个linecache模块，这里有两个可以提供帮助的链接。

linecache module documentation
linecache source code

从某种意义上说，您可以将整个文件“转储”到其缓存中，并使用来自类的linecache.cache数据进行读取。

import linecache as allLines
## have in mind that fileName in linecache behaves as any other open statement, you will need a path to a file if file is not in the same directory as script
linesList = allLines.updatechache( fileName ,None)
for i,x in enumerate(lineslist): print(i,x) #prints the line number and content
#or for more info
print(line.cache)
#or you need a specific line
specLine = allLines.getline(fileName,numbOfLine)
#returns a textual line from that number of line

有关其他信息，对于错误处理，您只需使用

即可

from sys import exc_info
try:
     raise YourError # or some other error
except Exception:
     print(exc_info() )

Answer 8

在Python 3中，您可以使用以下版本：

def Deb(msg = None):
  print(f"Debug {sys._getframe().f_back.f_lineno}: {msg if msg is not None else ''}")

然后在代码中，您可以使用：

Deb("Some useful information")
Deb()

产生：

123: Some useful information
124:

其中123和124是拨打电话的线路。

Answer 9

这是我在VSCode 1.39.2中在Python 3.7.3中获取行号的方法（dmsg是我的调试消息助记符）：

import inspect

def dmsg(text_s):
    print (str(inspect.currentframe().f_back.f_lineno) + '| ' + text_s)

要调用显示变量name_s及其值：

name_s = put_code_here
dmsg('name_s: ' + name_s)

输出看起来像这样：

37| name_s: value_of_variable_at_line_37

Answer 10

Golang 风格

import inspect
import sys
import atexit

ERR_FILE = open('errors.log', 'w+', encoding='utf-8')
LOG_FILE = open('log.log', 'w+', encoding='utf-8')

def exit_handler():
    # ctrl + C works as well
    log("Exiting")
    ERR_FILE.close()
    LOG_FILE.close()

# close files before exit
atexit.register(exit_handler)

def log(*args, files=[sys.stdout, LOG_FILE]):
    # can also add timestamps etc.
    cf = inspect.currentframe()
    for f in files:
        print("DEBUG", f"{inspect.stack()[1][1]}:{cf.f_back.f_lineno}", *args, file=f)
        f.flush()

def log_err(*args, files=[ERR_FILE, sys.stderr]):
    cf = inspect.currentframe()
    for f in files:
        print("ERROR", f"{inspect.stack()[1][1]}:{cf.f_back.f_lineno}", *args, file=f)
        f.flush()

log("Hello World!")
log_err("error")

输出

DEBUG sample.py:29 Hello World!
ERROR sample.py:30 error
DEBUG sample.py:9 Exiting

Answer 11

这是一个打印文件名和行号的简短函数。

from inspect import currentframe, getframeinfo


def HERE(do_print=True):
    ''' Get the current file and line number in Python script. The line 
    number is taken from the caller, i.e. where this function is called. 

    Parameters
    ----------
    do_print : boolean
        If True, print the file name and line number to stdout. 

    Returns
    -------
    String with file name and line number if do_print is False.

    Examples
    --------
    >>> HERE() # Prints to stdout

    >>> print(HERE(do_print=False))
    '''
    frameinfo = getframeinfo(currentframe().f_back)
    filename = frameinfo.filename.split('/')[-1]
    linenumber = frameinfo.lineno
    loc_str = 'File: %s, line: %d' % (filename, linenumber)
    if do_print:
        print('HERE AT %s' % (loc_str))
    else:
        return loc_str

用法：

HERE() # Prints to stdout
# Output: HERE AT File: model.py, line: 275

print(HERE(False)) # Retrieves string and prints it.
# Output: File: model.py, line: 276

Answer 12

inspect.currentframe().f_back.f_lineno

来自ActiveState Code。

文件名和python脚本的行号

12 个答案: