（二十一）arcpy开发&&经常使用的信息提示类
在arcpy开发中，我们会使用到关于信息提示，现在为大家提供一个关于这么方面的信息类。首先我们来看一下相关的函数。
获取时间，其中格式为%d%b_%H%M，来看一下函数定义。
def getTS(self):
# Gets a timestamp in a default format (day month time)
startTime = datetime.datetime.now()
timeStamp = startTime.strftime("%d%b_%H%M")
return timeStamp信息展示类，如下图所示。
def info(self, msg, *args, **kwargs):
arcpy.AddMessage(msg)
return super(ArcLogger, self).info(msg, *args, **kwargs)警告类，具体代码如下所示。
def warning(self, msg, *args, **kwargs):
arcpy.AddWarning(msg)
return super(ArcLogger, self).warning(msg, *args, **kwargs)调用arcpy自身的提示类。
def arcMessage(self, msg):
# Cannot assume that the arcpy module has already been loaded
import arcpy
arcpy.AddMessage(msg)
# self.disk(msg, self.diskLogName, True)
def arcWarn(self, msg):
import arcpy
arcpy.AddWarning(msg)
# self.disk(msg, self.diskLogName, True)
def arcError(self, msg):
import arcpy
arcpy.AddError(msg)
# self.disk(msg, self.diskLogName, True)log日志信息保存函数如下。
def useExistingLog(self, existingLogFileName):
if not os.path.exists(existingLogFileName):
print("%s is not a valid file." % existingLogFileName)
return False
else:
self.diskLogName = existingLogFileName
file_handler = logging.FileHandler(self.diskLogName)
self.addHandler(file_handler)
self.info("Using existing log file %s" % existingLogFileName)创建log日志信息类如下所示。
def setupDiskLog(self, logFolder, description='', timeStamp=None):
# Configures a file to log to disk. Description can be any user text.
# Timestamp is a preset timestamp when the log was started.
# If timestamp was not initialized by the user, set it up now
if not timeStamp:
timeStamp=self.getTS()
# Put the disk logs in a dedicated logs folder
if not os.path.exists(logFolder):
# Create a subfolder for the logs to avoid cluttering the main folder
try:
os.makedirs(logFolder)
except:
print("%s is not a valid folder." % logFolder)
return False
self.diskLogName = os.path.join(logFolder,'Log_%s_%s.txt' % (description,timeStamp))
file_handler = logging.FileHandler(self.diskLogName)
self.addHandler(file_handler)
self.info("Configuring disk log: %s" % self.diskLogName)
return self.diskLogName具体类完整信息如下所示。
from __future__ import division
import os
import logging
import logging.config
import datetime
try:
import arcpy
except:
print('No arcpy package installed or you are using Python 3.x.')
class ArcLogger(logging.Logger):
__version__ = "1.7"
def __init__(self, name="arcgis_logger", level=logging.INFO, silent=False):
self.name = name
self.level = level
if not silent:
print("Starting logging tool...")
super(ArcLogger, self).__init__(name, level)
sh = logging.StreamHandler()
self.addHandler(sh)
pass
def getTS(self):
# Gets a timestamp in a default format (day month time)
startTime = datetime.datetime.now()
timeStamp = startTime.strftime("%d%b_%H%M")
return timeStamp
# Override default info, warning, error methods.
def info(self, msg, *args, **kwargs):
arcpy.AddMessage(msg)
return super(ArcLogger, self).info(msg, *args, **kwargs)
def warning(self, msg, *args, **kwargs):
arcpy.AddWarning(msg)
return super(ArcLogger, self).warning(msg, *args, **kwargs)
def error(self, msg, *args, **kwargs):
arcpy.AddError(msg)
return super(ArcLogger, self).error(msg, *args, **kwargs)
def setupDiskLog(self, logFolder, description='', timeStamp=None):
# Configures a file to log to disk. Description can be any user text.
# Timestamp is a preset timestamp when the log was started.
# If timestamp was not initialized by the user, set it up now
if not timeStamp:
timeStamp=self.getTS()
# Put the disk logs in a dedicated logs folder
if not os.path.exists(logFolder):
# Create a subfolder for the logs to avoid cluttering the main folder
try:
os.makedirs(logFolder)
except:
print("%s is not a valid folder." % logFolder)
return False
self.diskLogName = os.path.join(logFolder,'Log_%s_%s.txt' % (description,timeStamp))
file_handler = logging.FileHandler(self.diskLogName)
self.addHandler(file_handler)
self.info("Configuring disk log: %s" % self.diskLogName)
return self.diskLogName
def useExistingLog(self, existingLogFileName):
if not os.path.exists(existingLogFileName):
print("%s is not a valid file." % existingLogFileName)
return False
else:
self.diskLogName = existingLogFileName
file_handler = logging.FileHandler(self.diskLogName)
self.addHandler(file_handler)
self.info("Using existing log file %s" % existingLogFileName)
def disk(self, msg, diskLogName='', silent=False):
# Writes a message 'msg' to a log file diskLogName
# if the diskLogName parameter is absent, it will use self.diskLogName
# First, check whether the log file has been supplied as a parameter.
if diskLogName == '':
diskLogName = self.diskLogName
self.info(msg)
# Following methods send messages to the arcpy logger (to be viewed
# in the Results tab of ArcMap) in addition to the native logger.
def arcMessage(self, msg):
# Cannot assume that the arcpy module has already been loaded
import arcpy
arcpy.AddMessage(msg)
# self.disk(msg, self.diskLogName, True)
def arcWarn(self, msg):
import arcpy
arcpy.AddWarning(msg)
# self.disk(msg, self.diskLogName, True)
def arcError(self, msg):
import arcpy
arcpy.AddError(msg)
# self.disk(msg, self.diskLogName, True)
def logLevels(self):
# Print message at different log levels
self.debug('DEBUG 5')
self.info('INFO 4')
self.warning('WARN 3')
self.error('ERR 2')
self.critical('CRIT 1')
def set_level_num(self, level):
# Sets the debug level to:
# 5: DEBUG (Detailed information, typically of interest only when diagnosing problems.)
# 4: INFO (Confirmation that things are working as expected.)
# 3: WARNING (Possible issue, but we can continue)
# 2: ERROR (Serious problem, something went wrong)
# 1: CRITICAL (The entire program must stop now)
if level == 5:
self.setLevel(logging.DEBUG)
if level == 4:
self.setLevel(logging.INFO)
if level == 3:
self.setLevel(logging.WARNING)
if level == 2:
self.setLevel(logging.ERROR)
if level == 1:
self.setLevel(logging.CRITICAL)
def p5(self, msg):
# Log a message msg at level 5 (DEBUG)
self.debug(msg)
def p4(self, msg):
# Log a message msg at level 4 (INFO)
self.info(msg)
def p3(self, msg):
# Log a message msg at level 3 (WARNING)
self.warning(msg)
def p2(self, msg):
# Log a message msg at level 2 (ERROR)
self.error(msg)
def p1(self, msg):
# Log a message msg at level 1 (CRITICAL)
self.critical(msg)
def setLoggingLevelInLoop(self, key):
# key is a keyboard input object returned by msvcrt.getch()
# q makes loop processing quiet, v makes it verbose
print("Key input %s" % key)
if key.decode("latin-1").upper() == 'V':
# Verbose, show all detailed messages
logLevel = 5
self.setLevel(logging.DEBUG)
print("Display set to verbose")
return logLevel
elif key.decode("latin-1").upper() == 'Q':
# Quiet, set to standard logging level
print("Display will be set to quiet")
logLevel = 4
self.setLevel(logging.INFO)
return logLevel
else:
pass
logging.setLoggerClass(ArcLogger)
logging.basicConfig()
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