fix: = is valid sign for measurement name

CHANGELOG.md

@@ -4,8 +4,8 @@
 1. [#112](https://github.com/influxdata/influxdb-client-python/pull/113): Support timestamp with different timezone in _convert_timestamp
 
 ### Bug Fixes
-1. [#115](https://github.com/influxdata/influxdb-client-python/pull/115): Fixed serialization of `\n`, `\r` and `\t` to Line Protocol 
 1. [#117](https://github.com/influxdata/influxdb-client-python/pull/117): Fixed appending default tags for single Point 
+1. [#115](https://github.com/influxdata/influxdb-client-python/pull/115): Fixed serialization of `\n`, `\r` and `\t` to Line Protocol, `=` is valid sign for measurement name 
 
 ## 1.8.0 [2020-06-19]
 

influxdb_client/client/write/point.py

@@ -12,6 +12,7 @@
 
 EPOCH = UTC.localize(datetime.utcfromtimestamp(0))
 DEFAULT_WRITE_PRECISION = WritePrecision.NS
+_ESCAPE_MEASUREMENT = str.maketrans({'\\': '\\\\', ',': r'\,', ' ': r'\ ', '\n': '\\n', '\t': '\\t', '\r': '\\r'})
 _ESCAPE_KEY = str.maketrans({'\\': '\\\\', ',': r'\,', ' ': r'\ ', '=': r'\=', '\n': '\\n', '\t': '\\t', '\r': '\\r'})
 _ESCAPE_STRING = str.maketrans({'\"': r"\"", "\\": r"\\"})
 
@@ -75,7 +76,7 @@ def field(self, field, value):
         return self
 
     def to_line_protocol(self):
-        _measurement = _escape_key(self._name)
+        _measurement = _escape_key(self._name, _ESCAPE_MEASUREMENT)
         _tags = _append_tags(self._tags)
         _fields = _append_fields(self._fields)
         if not _fields:
@@ -133,8 +134,10 @@ def _append_time(time, write_precision):
     return f" {int(_convert_timestamp(time, write_precision))}"
 
 
-def _escape_key(tag):
-    return str(tag).translate(_ESCAPE_KEY)
+def _escape_key(tag, escape_list=None):
+    if escape_list is None:
+        escape_list = _ESCAPE_KEY
+    return str(tag).translate(escape_list)
 
 
 def _escape_tag_value(value):

tests/test_point.py

@@ -46,6 +46,14 @@ def test_TagEscapingKeyAndValue(self):
 
         self.assertEqual("h\\n2\\ro\\t_data,carriage\\rreturn=carriage\\nreturn,new\\nline=new\\nline,t\\tab=t\\tab level=2i", point.to_line_protocol())
 
+    def test_EqualSignEscaping(self):
+
+        point = Point.measurement("h=2o") \
+            .tag("l=ocation", "e=urope") \
+            .field("l=evel", 2)
+
+        self.assertEqual("h=2o,l\\=ocation=e\\=urope l\\=evel=2i", point.to_line_protocol())
+
     def test_OverrideTagField(self):
         point = Point.measurement("h2o") \
             .tag("location", "europe") \