add new method in DevTools

doc/ChangeLog.txt

@@ -1,3 +1,10 @@
+
+
+.. rubric:: 0.9.22
+
+* NEWS:
+    * add a method in DevTools to check for the existence of a file
+
 .. rubric:: 0.9.21
 
 * BUGS:

easydev/tools.py

@@ -23,7 +23,8 @@
 import sys
 
 __all__ = ["shellcmd", "checkParam", "swapdict", "check_param_in_list",
-    "check_range", "precision", "AttrDict", "DevTools", "execute"]
+    "check_range", "precision", "AttrDict", "DevTools", "execute",
+    "touch"]
 
 
 def precision(data, digit=2):
@@ -153,6 +154,9 @@ def execute(cmd, showcmd=True, verbose=True):
         line = p.readline()
 
 
+def touch(fname, times=None):
+    with open(fname, 'a'):
+        os.utime(fname, times)
 
 
 def swapdict(dic, check_ambiguity=True):
@@ -297,6 +301,7 @@ def to_json(self, dictionary):
         return json.dumps(dictionary)
 
     def mkdir(self, dirname):
+        """Create a directory if it does not exists; pass without error otherwise"""
         try:
             os.mkdir(dirname)
         except OSError:
@@ -308,6 +313,14 @@ def shellcmd(self, cmd, show=False, verbose=False, ignore_errors=False):
         """See :func:`shellcmd`"""
         return shellcmd(cmd, show=show, verbose=verbose, ignore_errors=ignore_errors)
 
+    def check_exists(self, filename):
+        """Raise error message if the file does not exists"""
+        if os.path.exists(filename) is False:
+            raise ValueError("This file %s does not exists" % filename)
+
+
+
+
 
 
 

setup.py

@@ -7,7 +7,7 @@
 
 _MAJOR               = 0
 _MINOR               = 9
-_MICRO               = 21
+_MICRO               = 22
 version              = '%d.%d.%d' % (_MAJOR, _MINOR, _MICRO)
 release              = '%d.%d' % (_MAJOR, _MINOR)