[英]Python output to command line; Error not defined
我正在嘗試編寫一個腳本,該腳本接受一個參數並將輸出寫入命令窗口。 出於某種原因,我收到錯誤:
NameError: name 'month' not defined
這是整個腳本:
import sys
hex = str(sys.argv)
sys.stdout.write (month(hex) + " " + day(hex) + ", " + year(hex) + " " + hour(hex) + ":" + minute(hex) + ":" + second(hex))
def year (hex):
year = int(hex[0:2], 16)
year = year + 1970
return str(year)
def month (hex):
month = int(hex[2:4], 16)
if month == 0:
month = "January"
return month
elif month == 1:
month = "February"
return month
elif month == 2:
month = "March"
return month
elif month == 3:
month = "April"
return month
elif month == 4:
month = "May"
return month
elif month == 5:
month = "June"
return month
elif month == 6:
month = "July"
return month
elif month == 7:
month = "August"
return month
elif month == 8:
month = "September"
return month
elif month == 9:
month = "October"
return month
elif month == 10:
month = "November"
return month
else:
month = "December"
return month
def day (hex):
day = int(hex[4:6], 16)
return str(day)
def hour (hex):
hour = int(hex[6:8], 16)
if hour < 10:
return "0" + str(hour)
else:
return str(hour)
def minute (hex):
minute = int(hex[8:10], 16)
if minute < 10:
return "0" + str(minute)
else:
return str(minute)
def second (hex):
second = int(hex[10:12], 16)
if minute < 10:
return "0" + str(second)
else:
return str(second)
當我使用在線python解釋器來運行它時,功能運行良好。 我只是不知道如何從命令行運行它並將輸出發送回命令窗口。 謝謝
在函數定義之后放置sys.stdout.write
行。
請不要在函數內使用month
和函數中的變量。
在python中,文件從上到下逐行解析,因此該行的month
, year
, hour
, minute
和second
函數尚未定義:
sys.stdout.write (month(hex) + " " + day(hex) + ", " + year(hex) + " " + hour(hex) + ":" + minute(hex) + ":" + second(hex))
將這些函數定義移到此行之上。
使用與函數名稱同名的局部變量不是一個好主意。
由於sys.argv
返回一個列表(第一個元素是文件名),因此您不能在其上應用hex
。 在列表的項目上應用hex
,即hex( int(sys.argv[1]) )
>>> lis = ['foo.py', '12']
>>> hex( int(lis[1]) ) #use `int()` as hex expects a number
'0xc'
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