Fix ResourceWarnings in makeunicodedata.py.

Tools/unicode/makeunicodedata.py

@@ -816,8 +816,8 @@ class UnicodeData:
                  expand=1,
                  cjk_check=True):
         self.changed = []
-        file = open_data(UNICODE_DATA, version)
         table = [None] * 0x110000
+        with open_data(UNICODE_DATA, version) as file:
             while 1:
                 s = file.readline()
                 if not s:
@@ -855,8 +855,8 @@ class UnicodeData:
         self.table = table
         self.chars = list(range(0x110000)) # unicode 3.2
 
-        file = open_data(COMPOSITION_EXCLUSIONS, version)
         self.exclusions = {}
+        with open_data(COMPOSITION_EXCLUSIONS, version) as file:
             for s in file:
                 s = s.strip()
                 if not s:
@@ -867,7 +867,8 @@ class UnicodeData:
                 self.exclusions[char] = 1
 
         widths = [None] * 0x110000
-        for s in open_data(EASTASIAN_WIDTH, version):
+        with open_data(EASTASIAN_WIDTH, version) as file:
+            for s in file:
                 s = s.strip()
                 if not s:
                     continue
@@ -881,6 +882,7 @@ class UnicodeData:
                     chars = [int(s[0], 16)]
                 for char in chars:
                     widths[char] = s[1]
+
         for i in range(0, 0x110000):
             if table[i] is not None:
                 table[i].append(widths[i])
@@ -888,7 +890,9 @@ class UnicodeData:
         for i in range(0, 0x110000):
             if table[i] is not None:
                 table[i].append(set())
-        for s in open_data(DERIVED_CORE_PROPERTIES, version):
+
+        with open_data(DERIVED_CORE_PROPERTIES, version) as file:
+            for s in file:
                 s = s.split('#', 1)[0].strip()
                 if not s:
                     continue
@@ -907,7 +911,8 @@ class UnicodeData:
                         # apply to unassigned code points; ignore them
                         table[char][-1].add(p)
 
-        for s in open_data(LINE_BREAK, version):
+        with open_data(LINE_BREAK, version) as file:
+            for s in file:
                 s = s.partition('#')[0]
                 s = [i.strip() for i in s.split(';')]
                 if len(s) < 2 or s[1] not in MANDATORY_LINE_BREAKS:
@@ -928,7 +933,8 @@ class UnicodeData:
         # for older versions, and no delta records will be created.
         quickchecks = [0] * 0x110000
         qc_order = 'NFD_QC NFKD_QC NFC_QC NFKC_QC'.split()
-        for s in open_data(DERIVEDNORMALIZATION_PROPS, version):
+        with open_data(DERIVEDNORMALIZATION_PROPS, version) as file:
+            for s in file:
                 if '#' in s:
                     s = s[:s.index('#')]
                 s = [i.strip() for i in s.split(';')]
@@ -948,7 +954,8 @@ class UnicodeData:
             if table[i] is not None:
                 table[i].append(quickchecks[i])
 
-        zip = zipfile.ZipFile(open_data(UNIHAN, version))
+        with open_data(UNIHAN, version) as file:
+            zip = zipfile.ZipFile(file)
             if version == '3.2.0':
                 data = zip.open('Unihan-3.2.0.txt').read()
             else: