No need to mark (unicode) strings as u"foo" anymore.

lib/matplotlib/_mathtext_data.py

@@ -281,7 +281,7 @@
     r'\rho'                      : ('psyr', 114),
     r'\sigma'                    : ('psyr', 115),
     r'\tau'                      : ('psyr', 116),
-    '\\upsilon'                  : ('psyr', 117),
+    r'\upsilon'                  : ('psyr', 117),
     r'\varpi'                    : ('psyr', 118),
     r'\omega'                    : ('psyr', 119),
     r'\xi'                       : ('psyr', 120),
@@ -296,7 +296,7 @@
     r'\spadesuit'                : ('psyr', 170),
     r'\leftrightarrow'           : ('psyr', 171),
     r'\leftarrow'                : ('psyr', 172),
-    '\\uparrow'                  : ('psyr', 173),
+    r'\uparrow'                  : ('psyr', 173),
     r'\rightarrow'               : ('psyr', 174),
     r'\downarrow'                : ('psyr', 175),
     r'\pm'                       : ('psyr', 176),
@@ -335,12 +335,12 @@
     r'\surd'                     : ('psyr', 214),
     r'\__sqrt__'                 : ('psyr', 214),
     r'\cdot'                     : ('psyr', 215),
-    '\\urcorner'                 : ('psyr', 216),
+    r'\urcorner'                 : ('psyr', 216),
     r'\vee'                      : ('psyr', 217),
     r'\wedge'                    : ('psyr', 218),
     r'\Leftrightarrow'           : ('psyr', 219),
     r'\Leftarrow'                : ('psyr', 220),
-    '\\Uparrow'                  : ('psyr', 221),
+    r'\Uparrow'                  : ('psyr', 221),
     r'\Rightarrow'               : ('psyr', 222),
     r'\Downarrow'                : ('psyr', 223),
     r'\Diamond'                  : ('psyr', 224),
@@ -362,7 +362,7 @@
     r'\slash'                    : ('psyr', 0o57),
     r'\Lamda'                    : ('psyr', 0o114),
     r'\neg'                      : ('psyr', 0o330),
-    '\\Upsilon'                  : ('psyr', 0o241),
+    r'\Upsilon'                  : ('psyr', 0o241),
     r'\rightbrace'               : ('psyr', 0o175),
     r'\rfloor'                   : ('psyr', 0o373),
     r'\lambda'                   : ('psyr', 0o154),

lib/matplotlib/tests/test_arrow_patches.py

@@ -62,7 +62,7 @@ def __prepare_fancyarrow_dpi_cor_test():
     ax.set_xlim([0, 1])
     ax.set_ylim([0, 1])
     ax.add_patch(mpatches.FancyArrowPatch(posA=(0.3, 0.4), posB=(0.8, 0.6),
-                                          lw=3, arrowstyle=u'->',
+                                          lw=3, arrowstyle='->',
                                           mutation_scale=100))
     return fig2
 

lib/matplotlib/tests/test_backend_pdf.py

@@ -28,7 +28,7 @@ def test_use14corefonts():
     rcParams['font.sans-serif'] = ['Helvetica']
     rcParams['pdf.compression'] = 0
 
-    text = u'''A three-line text positioned just above a blue line
+    text = '''A three-line text positioned just above a blue line
 and containing some French characters and the euro symbol:
 "Merci pépé pour les 10 €"'''
 

lib/matplotlib/tests/test_mathtext.py

@@ -86,7 +86,7 @@
     # mathtex doesn't support array
     # 'mmltt23'    : r'$\left(\begin{array}{cc}\hfill \left(\begin{array}{cc}\hfill a\hfill & \hfill b\hfill \\ \hfill c\hfill & \hfill d\hfill \end{array}\right)\hfill & \hfill \left(\begin{array}{cc}\hfill e\hfill & \hfill f\hfill \\ \hfill g\hfill & \hfill h\hfill \end{array}\right)\hfill \\ \hfill 0\hfill & \hfill \left(\begin{array}{cc}\hfill i\hfill & \hfill j\hfill \\ \hfill k\hfill & \hfill l\hfill \end{array}\right)\hfill \end{array}\right)$',
     # mathtex doesn't support array
-    # 'mmltt24'   : u'$det|\\begin{array}{ccccc}\\hfill {c}_{0}\\hfill & \\hfill {c}_{1}\\hfill & \\hfill {c}_{2}\\hfill & \\hfill \\dots \\hfill & \\hfill {c}_{n}\\hfill \\\\ \\hfill {c}_{1}\\hfill & \\hfill {c}_{2}\\hfill & \\hfill {c}_{3}\\hfill & \\hfill \\dots \\hfill & \\hfill {c}_{n+1}\\hfill \\\\ \\hfill {c}_{2}\\hfill & \\hfill {c}_{3}\\hfill & \\hfill {c}_{4}\\hfill & \\hfill \\dots \\hfill & \\hfill {c}_{n+2}\\hfill \\\\ \\hfill \\u22ee\\hfill & \\hfill \\u22ee\\hfill & \\hfill \\u22ee\\hfill & \\hfill \\hfill & \\hfill \\u22ee\\hfill \\\\ \\hfill {c}_{n}\\hfill & \\hfill {c}_{n+1}\\hfill & \\hfill {c}_{n+2}\\hfill & \\hfill \\dots \\hfill & \\hfill {c}_{2n}\\hfill \\end{array}|>0$',
+    # 'mmltt24'   : r'$det|\begin{array}{ccccc}\hfill {c}_{0}\hfill & \hfill {c}_{1}\hfill & \hfill {c}_{2}\hfill & \hfill \dots \hfill & \hfill {c}_{n}\hfill \\ \hfill {c}_{1}\hfill & \hfill {c}_{2}\hfill & \hfill {c}_{3}\hfill & \hfill \dots \hfill & \hfill {c}_{n+1}\hfill \\ \hfill {c}_{2}\hfill & \hfill {c}_{3}\hfill & \hfill {c}_{4}\hfill & \hfill \dots \hfill & \hfill {c}_{n+2}\hfill \\ \hfill \u22ee\hfill & \hfill \u22ee\hfill & \hfill \u22ee\hfill & \hfill \hfill & \hfill \u22ee\hfill \\ \hfill {c}_{n}\hfill & \hfill {c}_{n+1}\hfill & \hfill {c}_{n+2}\hfill & \hfill \dots \hfill & \hfill {c}_{2n}\hfill \end{array}|>0$',
     r'${y}_{{x}_{2}}$',
     r'${x}_{92}^{31415}+\pi $',
     r'${x}_{{y}_{b}^{a}}^{{z}_{c}^{d}}$',

lib/matplotlib/type1font.py

@@ -275,7 +275,7 @@ def fontmatrix(array):
             newmatrix = np.dot(modifier, oldmatrix)
             array[::2] = newmatrix[0:3, 0]
             array[1::2] = newmatrix[0:3, 1]
-            as_string = u'[' + u' '.join(str(x) for x in array) + u']'
+            as_string = '[' + ' '.join(str(x) for x in array) + ']'
             return as_string.encode('latin-1')
 
         def replace(fun):

tools/github_stats.py

@@ -99,21 +99,17 @@ def report(issues, show_urls=False):
     if show_urls:
         for i in issues:
             role = 'ghpull' if 'merged_at' in i else 'ghissue'
-            print(u'* :%s:`%d`: %s' % (role, i['number'],
-                                        i['title'].replace(u'`', u'``')))
+            print('* :%s:`%d`: %s' % (role, i['number'],
+                                      i['title'].replace('`', '``')))
     else:
         for i in issues:
-            print(u'* %d: %s' % (i['number'], i['title'].replace(u'`', u'``')))
+            print('* %d: %s' % (i['number'], i['title'].replace('`', '``')))
 
 #-----------------------------------------------------------------------------
 # Main script
 #-----------------------------------------------------------------------------
 
 if __name__ == "__main__":
-    # deal with unicode
-    if sys.version_info < (3,):
-        sys.stdout = codecs.getwriter('utf8')(sys.stdout)
-
     # Whether to add reST urls for all issues in printout.
     show_urls = True
 
@@ -211,7 +207,7 @@ def report(issues, show_urls=False):
     ncommits = len(pr_authors) + ncommits - len(pulls)
     author_cmd = ['git', 'check-mailmap'] + pr_authors
     with_email = check_output(author_cmd).decode('utf-8', 'replace').splitlines()
-    all_authors.extend([ u'* ' + a.split(' <')[0] for a in with_email ])
+    all_authors.extend(['* ' + a.split(' <')[0] for a in with_email])
     unique_authors = sorted(set(all_authors), key=lambda s: s.lower())
 
     print("We closed %d issues and merged %d pull requests." % (n_issues, n_pulls))